Yes sure, this is the AIPMT Last years question papers with solution:

The van't Hoff factor i for a compound which undergoes dissociation in one solvent
and association in other solvent is respectively:
(1) less than one and greater than one
(2) less than one and less than one
(3) greater than one and less than one
(4) greater than one and greater

Which of the following elements is present as the impurity to the maximum extent
in the pig iron?
(1) Manganese (2) Carbon (3) Silicon (4) Phosphorus

1. Considering the state of hybridization of carbon atoms, find out the molecule
among the following which is linear?
(1) CH3 - CH = CH - CH3 (2) CH3 - C = C - CH3
(3) CH2 = CH - CH2 - C = CH (4) CH3 - CH
2
- CH
2
- CH3
1 2 3 4
Sol.: CH3 - C = C- CH3 is a linear molecule as C2 and C3 are sp hybridized.
2. In the following reactions,
(b) A---H_B_r-'--,d_a_rk __ -----+ C + D
in absence of peroxide [ M • ] [ M. ] Pr:~::t Pr;:::t
the major products (A) and (C) are respectively:
yH3
(1) CH2 = C- CH2 - CH3 and
CH3 I
(2) CH3 -C = CH -CH3 and
CH3 I
(3) CH3 - C = CH- CH3 and
CH3
I
(4) CH2 = C-CH2 -CH3 and
CH3 I
CH3 -CH-CH-CH3 I
Br
CH3 I
CH3 -C-CH2 -CH3 I
Br
:. Correct choice : (2)
CH3 I H+
CH3 EB
I -H
Sol.: CH3 - CH - CH - CH3 I -H20
CH3 -CH-CH-CH3 --~
EB
CH3 I
OH
CH3 - C = CH - CH3
(A)
major product
CH3 I
+ CH3 - CH - CH = CH2
(B)
minor product
HEr, dark
absence of
peroxide
CH3 I
CH3 -C-CH2 -CH3
I
Br
(C)
maJor
:. Correct choice : (2)
3. Standard electrode potential of three metals X, Y and Z are- 1.2 V, + 0.5 V and
-3.0 V respectively. The reducing power of these metals will be:
(1) Y > Z >X (2) Y >X> Z (3) Z >X> Y (4) X> Y > Z
Sol.: Reducing power of the metal is inversely proportional to the reduction potential of
the metal.
Z>X>Y
:. Correct choice : (3)
4. The total number of atomic orbitals in fourth energy level of an atom is:
(1) 8 (2) 16 (3) 32 (4) 4
Sol.: 4th energy level has ones, three p, five d and seven f orbitals.
Total = 1 + 3 + 5 + 7 = 16
:. Correct choice : (2)
5. Which of the following has the minimum bond length?
(1) o2 (2) 02 (3) o§-
Sol.: Minimum length is related to maximum bond order
Species Bond order
o+
2 (2.5)
o; (1.5)
o2-
2 (1.0)
02 (2.0)
:. Correct choice : (1)
6. If x is amount of adsorbate and m is amount of adsorbent, which of the following
relations is not related to adsorption process?
X (1) - = f(p) at constant T
m
(3) p = f(T) at constant (
Sol.: ~ = f(T) at constant p is wrongly related.
m
It must be as ( = fl ~)
(2) ~ = f(T) at constant p
m
(4) ~ = p xT
m
:. Correct choice : (2)
7. A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the
concentration of NH,! is 0.20 M. If the equilibrium constant, Kb for NH3 equals
1.8 x 10-5
, what is the pH of this solution? (log 2.7 = 0.43)
(1) 9.08 (2) 9.43 (3) 11.72 (4) 8.73
[salt]
Sol.: pOH = pKb +log--
[base]
=-log ( 1.8 x 10- 5 ) +log (
0
•
2
) lo.3
= 4.57
Hence pH = 14 - 4.57 = 9.43
:. Correct choice : (2)
8. The electrode potentials for Cuf;q) + e--------+ Cu(aq) and Cu(aq) + e--------+ Cu(s) are
+ 0.15 V and+ 0.50 V respectively. The value of E~u2+ /Cu will be:
(1) 0.500 v (2) 0.325 v (3) 0.650 v (4) 0.150 v
2+ - + 0 Sol.: Cu(aq) +e ---+Cu(aq);~G1 =-1xFx(+0.15)
Cu(aq) + e----+ Cu(s); ~G~ = -1 X F(+ 0.50)
2+ - 0 0 0 Cu(aq) + 2e ---+ Cu(s); ~G 3 = ~G 1 + ~G 2
~G 0 =- nFE 0 =- 2FE0
3
Hence E 0 = 0.325 V
:. Correct choice : (2)
9. For the four successive transition elements (Cr, Mn, Fe and Co), the stability of
+ 2 oxidation state will be there in which of the following order?
(1) Mn > Fe > Cr > Co
(3) Co > Mn > Fe > Cr
(2) Fe > Mn > Co > Cr
(4) Cr > Mn > Co > Fe
(At. nos. Cr = 24, Mn = 25, Fe = 26, Co = 27)
Sol.: Stability of +2 state of the following is Mn > Fe > Cr > Co
Mn+2 lililililil d5 half filled; hence most stable.
Fe2+ lillilililil d6 (four unpaired~)
Cr2+ lilililil I d4
Co2+ lrllrll r I r I r I d7
:. Correct choice : (1)
10. Which one of the following statements for the order of a reaction is incorrect?
(1) Order can be determined only experimentally.
(2) Order is not influenced by stoichiometric coefficient of the reactants.
(3) Order of reaction is sum of power to the concentration terms of reactants to
express the rate of reaction
(4) Order of reaction is always whole number.
Sol.: Order of reaction may be whole number, zero or fractional.
:. Correct choice : (4)
11. Which one of the following is most reactive towards electrophilic reagent?
@CH3
(2)
OH
@CH3
(3)
NHCOCH3 @CH3
(4)
CH20H
Sol.: For Electrophilic attack, benzene ring must be activated. - CH3 group, - OCH3
group as well as - OH group activate the benzene ring. But - OCH3 group activates
more than - OH group.
:. Correct choice : (1)
12. In a set of reactions m-bromobenzoic acid gave a product D. Identify the product D.
rn-IS02NH2
(1)y
Br
rn-INH2
(3)y
Br
(A)
NaOH
)
Br2
B
COCl
c NaOH
Br2
6 NH3
LSlBr-----'~)
(B)
D
rn-ICOOH
(2)y
NH2
rn-ICONH2
(4)y
Br
(C)
NH2
6 (meta isomer) ~Br
(D)
:. Correct choice : (3)
13. Which of the two ions from the list given below that have the geometry that is
explained by the same hybridization of orbitals, NOz, N03, NH2, NH:i, SCN-?
(1) NOz and NOiJ
(2) NH,! and NOiJ
(3) SCN- and NHz
(4) NOz and NHz
Sol.: Species Hybridization of the central atom
N02 5+1=3 2
2
sp
N03 5+1=3 2
2
sp
NH+ 5+4-1
=4 3
4 2
sp
NH2
5+2+1
=4 3
2
sp
SCN- :s =C =N: sp
:. Correct choice : (1)
14. Which of the following is least likely to behave as Lewis base?
(3) BF
3
Sol.: BF 3 is an electron deficient species and it is a Lewis acid.
:. Correct choice : (3)
15. Which one of the following statements is not true regarding(+) Lactose?
(1) On hydrolysis ( +) Lactose gives equal amount of D( +) glucose and D( +)
galactose
(2) ( +) Lactose is a ~-glycoside formed by the union of a molecule of D( +) glucose
and a molecule of D( +)galactose
(3) ( +) Lactose is a reducing sugar and does not exhibit mutarotation
(4) (+)Lactose, C12H220 11 contains 8-0H groups
Sol.: Reducing sugar will show mutarotation.
:. Correct choice : (3)
16. The freezing point depression constant for water is- 1.86°C m -l. If 5.00 g Na2SO 4
is dissolved in 45.0 g H20, the freezing point is changed by- 3.82°C. Calculate the
van't Hoff factor for N a 2SO 4.
(1) 2.05 (2) 2.63 (3) 3.11 (4) 0.381
S I T
. K 1000 W2
0 .: ~ f = I f ----=-
M2Wl
. ~Tf M2 W1 3.82 X 142 X 45
I = ----'------"'----'"--
Kr 1000 W2 1.86 X 1000 X 5
= 2.624 7 "'2.63
:. Correct choice : (2)
17. Of the following complex ions, which is diamagnetic in nature?
(1) [NiCl
4
J2- (2) [Ni(CN)i- (3) [CuCl
4
J2- (4) [CoF/-
Sol.: N-2+. I Ill liLiiLiitlitlx I [gJ lxlxl
[Ni(CN)4 ]2 - 3d8 4s 4p
dsp 2
No unpaired electrons and hence diamagnetic.
:. Correct choice : (2)
18. The correct IUPAC name of the compound
IS:
(1) 4-Ethyl-3-propyl hex-1-ene (2) 3-Ethyl-4-ethenyl heptane
(3) 3-Ethyl-4-propyl hex-5-ene (4) 3-(1-ethyl propyl) hex-1-ene
Sol.:
6
4-Ethyl-3-propyl hex-1-ene
:. Correct choice : (1)
19. By what factor does the average velocity of a gaseous molecule increase when the
temperature (in Kelvin) is doubled?
(1) 2.0 (2) 2.8 (3) 4.0 (4) 1.4
Sol.: Average velocity= ~SRT
nM
When temperature is doubled, new velocity is .J2 times the original velocity i.e.,
1.4 times.
:. Correct choice : (4)
20. Which one of the following statement is not true?
(1) pH of drinking water should be between 5.5 - 9.5
(2) Concentration of DO below 6 ppm is good for the growth of fish
(3) Clean water would have a BOD value ofless than 5 ppm
(4) Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant
:. Correct choice : (2)
21. Name the type of the structure of silicate in which one oxygen atom of [SiO 4]4- is
shared?
Sol.:
(1) Linear chain silicate
(3) Pyrosilicate
o- o-
1 I o- -s-o-s-o- pyrosilicate.
1 I o- o-
(2) Sheet silicate
(4) Three dimensional
:. Correct choice : (3)
22. Two gases A and B having the same volume diffuse through a porous partition in
20 and 10 seconds respectively. The molecular mass of A is 49 u. Molecular mass of
B will be:
(1) 50.00 u (2) 12.25 u
Sol.: Volume of diffusion of gases is the same
tA =~MA
tB MB
20 = ~ 49 or 400 = 49 or
10 MB 100 MB
MB = 12.25 u
(3) 6.50 u (4) 25.00 u
:. Correct choice : (2)
23. In Dumas' method of estimation of nitrogen 0.35 g of an organic compound gave
55 mL of nitrogen collected at 300 K temperature and 715 mm pressure. The
percentage composition of nitrogen in the compound would be:
(Aqueous tension at 300 K = 15 mm)
(1) 15.45
(715 -15)55 760 V0
300 273
V: _ 700x55x273
0 - 300x760
(2) 16.45 (3) 17.45
Mass ofNitrogen =
700 x 55 x 273 x~ = 0.05762 g
300x760 22,400
Percentage of Nitrogen = 0
•
05762
x 100 = 16.45%
0.35
(4) 14.45
:. Correct choice : (2)
24. Which one of the following is employed as Antihistamine?
(1) Chloramphenicol
(3) Norothindrone
Sol.: Antihistamine is Diphenyl hydramine
(2) Diphenyl hydramine
(4) Omeprazole
:. Correct choice : (2)
@
NOz Zn
25. What is the product obtained in the following reaction: -::-::::=:==:------+
NH4Cl
... ?
~NHOH
(1)~
Sol.: ---=Z=n-~
@
NOz @NH-OH
NH4C!
~NH (4)~ 2
:. Correct choice : (1)
26. Standard electrode potential for Sn 4+/Sn2+ couple is + 0.15 V and that for the
Cr3+/Cr couple is- 0.74 V. These two couple in their standard state are connected
to make cell. The cell potential will be:
(1) + 1.19 v
= 0.15- (- 0.74)
= 0.89 v
(2) + 0.89 v (3) + 0.18 v (4) + 1.83 v
:. Correct choice : (2)
27. The van't Hoff factor i for a compound which undergoes dissociation in one solvent
and association in other solvent is respectively:
(1) less than one and greater than one
(2) less than one and less than one
(3) greater than one and less than one
(4) greater than one and greater than one
Sol.: i > 1 for dissociation
i < 1 for association
:. Correct choice : (3)
28. The Lassaigne's extract is boiled with cone. HN03 while testing for halogens. By
doing so it:
(1) decomposes Na2S and NaCN, ifformed
(2) helps in the precipitation of AgCl
(3) increases the solubility product of AgCl
(4) increases the concentration of NOiJ ion
:. Correct choice : (1)
29. The energies E1 and E2 of two radiations are 25 eV and 50 eV respectively. The
relation between their wavelengths i.e., A1 and A2 will be
1
(4) A =- A
1 2 2
Sol.: Energy is inversely proportional to A
25 = 'A2 = _!_
50 'A1 2
'Al = 2'A2
:. Correct choice : (2)
30. A gaseous mixture was prepared by taking equal mole of CO and N2. If the total
pressure of the mixture was found 1 atmosphere, the partial pressure of the
nitrogen (N2) in the mixture is:
(1) 0.5 atm (2) 0.8 atm (3) 0.9 atm (4) 1 atm
Sol.: PN
2
=XN
2
PT =0.5x1
= 0.5 atm
:. Correct choice : (1)
31. Mole fraction of the solute in a 1.00 molal aqueous solution is:
(1) 0.1770 (2) 0.0177
Sol.: Mole fraction of solute = _n__,z,____
nl +nz
1
1000 +1
18
(3) 0.0344 (4) 1.7700
= -
1
- = 0.0177
56.55
:. Correct choice : (2)
32. Clemmensen reduction of a ketone is carried out in the presence of which of the
following?
(1) Glycol with KOH
(3) Li AlH4
(2) Zn-Hg with HCl
(4) H2 and Pt as catalyst
:. Correct choice : (2)
33. Acidified K2Cr20 7 solution turns green when Na2S03 is added to it. This is due to
the formation of:
(2) Cro~- (4) CrS04
Sol.: Reduced product, Cr 2(80 4)3 is green.
:. Correct choice : (1)
34. Which of the following elements is present as the impurity to the maximum extent
in the pig iron?
(1) Manganese (2) Carbon (3) Silicon (4) Phosphorus
Sol.: Pig iron contains 2 - 5% carbon with traces of Si, Mn and P.
:. Correct choice : (2)
35. If the enthalpy change for the transition of liquid water to steam is 30 kJ moC1 at
27°C, the entropy change for the process would be:
(1) 10 J mol-l K-1 (2) 1.0 J mol-l K-1
(3) 0.1 J mol-l K-1
3
Sol.: L'lS = L'lH = 30 x 10 J per mole
T 300K
= 100 J mol-l K-1
(4) 100 J mol-l K-1
:. Correct choice : (4)
36. Which of the following compounds has the lowest melting point?
(1) CaCl2
(2) CaBr 2
(3) Cai2
(4) CaF 2
Sol.: Cai2 has the lowest melting point.
:. Correct choice : (3)
37. The complexes [Co(NH3)6J[Cr(CN)6
] and [Cr(NH3)6
] [Co(CN)6
] are the examples of
which type ofisomerism?
(1) Linkage isomerism (2) Ionization isomerism
(3) Coordination isomerism (4) Geometrical isomerism
:. Correct choice : (3)
38. The complex, [Pt(Py)(NH3) BrCl] will have how many geometrical isomers?
(1) 3 (2) 4
Py~Br
Sol.: Pt
Cl NH3
PYi~Br
Pt
H3N Cl
(3) 0
Py~NH3
~ Cl Br
(4) 2
:. Correct choice : (1)
39. Enthalpy change for the reaction, 4H(g)-------+ 2H2(g) is- 869.6 kJ. The dissociation
energy of H - H bond is:
(1) - 434.8 kJ (2)- 869.6 kJ (3) + 434.8 kJ (4) + 217.4 kJ
Sol.: 2H - H-------+ 4H : L'l H = + 869.6 kJ
40.
Bond dissociation energy=
869
•
6
= 434.8 kJ
2
:. Correct choice : (3)
. 2+ 2+ 2+ 2+ 4 5 6 7 The d-electron configuratiOns of Cr , Mn , Fe and Co are d , d , d and d
respectively. Which one of the following will exhibit minimum paramagnetic
behaviour?
(At. nos. Cr = 24, Mn = 25, Fe = 26, Co = 27)
Sol.: Complex Unpaired electrons
[ Mn(H20)6y+
[ Fe(H20 )6
]
2
+
[Co (H20 )6
]
2
+
5
4
3
4
:. Correct choice : (3)
41. Which of the following is correct option for free expansion of an ideal gas under
adiabatic condition?
(1) q = 0, L'l T *- 0, w = 0
(3) q = 0, L'l T = 0, w = 0
(2) q *- 0, L'l T = 0, w = 0
(4) q = 0, L'l T < 0, w *- 0
Sol.: For adiabatic free expansion q = 0, L'lT = 0 and w = 0
:. Correct choice : (3)
42. The value of L'lH for the reaction X2(g) + 4Y2(g) 2XY 4(g) is less than zero.
Formation of XY 4(g) will be favoured at :
(1) High temperature and high pressure (2) Low pressure and low temperature
(3) High temperature and low pressure (4) High pressure and low temperature
Sol.: X2(g) + 4Y 2(g) ~ 2XY 4(g) ; L'lH = - Ve exothermic.
L'ln=-3
Formation ofXY4 is favoured by low temperature and high pressure.
:. Correct choice : (4)
43. The correct order of increasing bond length of C - H, C - 0, C - C and C = C is:
(1) C - H < C = C < C - 0 < C - C
ffi)C-O<C-H<C-C<C=C
Sol.: C - H < C = C < C - 0 < C - C
OOC-C<C=C<C-O<C-H
(4) C- H < C- 0 < C- C < C = C
:. Correct choice : (1)
44. If the E~ell for a given reaction has a negative value, then which of the following
gives the correct relationships for the values of L'lG0 and K ? eq
(1) L'lG0 > 0; K > 1 eq
(3) L'lG0 < 0; K < 1 eq
Sol.: L'lG0 = - nFE0 = 2.303 RT log K eq
When E~ell is - ve
L'lG0 is + ve i.e., non-spontaneous.
K <1 eq
(2) L'lG0 < 0; K > 1 eq
(4) L'lG0 > 0; K < 1 eq
:. Correct choice : (4)
45. Which one is a nucleophilic substitution reaction among the following?
(2) RCHO + R'MgX-------+ R- CH- R'
I
OH
CH3 -CH-CH3 I
OH
c~ c~
I I
(3) CH3 - CH2 - CH- CH2Br + NH3 ~ CH3 - CH2 - CH- CH2NH2
(4) CH3CHO + HCN-------+ CH3CH(OH)CN
Sol.: In compound (3),
Br is substituted by NH2 by SN2 reaction.
:. Correct choice : (3)
46. Which of the following pairs of metals is purified by van Arkel method?
(1) Ga and In (2) Zr and Ti (3) Ag and Au (4) Ni and Fe
Sol.: Zr and Ti are purified by van Arkel Method.
:. Correct choice : (2)
47. For the reaction N2(g) + 0 2(g) ~ 2NO(g)' the equilibrium constant is K1. The
equilibrium constant is K2 for the reaction 2NO(g) + 0 2(g) ~ 2 N02(g)" What is
K for the reaction N02(g) ~ % N2(g) + 0 2(g)?
2NO(g) + 0 2(g) ~ 2N02(g) ; K2
:. Correct choice : (3)
48. Which one of the following is present as an active ingredient in bleaching powder
for bleaching action?
(1) Ca0Cl2 (2) Ca(0Cl)2 (3) Ca02Cl (4) CaCl2
Sol.: Ca/Cl bleaching powder.
"-oc1
:. Correct choice : (1)
49. Of the following which one is classified as polyester polymer?
(1) Terylene (2) Bakelite (3) Melamine (4) Nylon-66
Sol.: Terylene is a polyester.
50. If n = 6, the correct sequence for filling of electrons will be:
(1) ns-------+ (n - 2)f-------+ (n - l)d-------+ np
(2) ns-------+ (n - l)d-------+ (n - 2)f-------+ np
(3) ns-------+ (n - 2)f-------+ np-------+ (n- l)d
(4) ns-------+ np(n- l)d-------+ (n- 2)f
Sol.: 6s < 4f < 5d < 6p.
:. Correct choice : (1)
:. Correct choice : (1)
BIOLOGY
51. What will you look for to identify the sex of the following?
(1) Female Ascaris - Sharply curved posterior end
(2) Male frog -A copulatory pad on the first digit of the hind limb
(3) Female cockroach -Anal cerci
(4) Male shark- Claspers borne on pelvic fins
:. Correct Choice: (4)
52. Filiform apparatus is a characteristic feature of:
(1) Suspensor (2) Egg (3) Synergid (4) Zygote
:. Correct Choice: (3)
53. "Jaya" and "Ratna" developed for green revolution in India are the varieties of:
(1) Maize (2) Rice (3) Wheat (4) Bajra
:. Correct Choice: (2)
54. A prokaryotic autotrophic nitrogen fixing symbiont is found in:
(1) Alnus (2) Cycas (3) Cicer (4) Pisum
:. Correct Choice: (2)
55. One very special feature in the earthworm Pheretima is that:
(1) Fertilisation of eggs occurs inside the body
(2) The typhlosole greatly increases the effective absorption area of the digested
food in the intestine
(3) The S-shaped setae embedded in the integument are the defensive weapons
used against the enemies
(4) It has a long dorsal tubular heart
:. Correct Choice: (2)
56. What type of human population is represented by the following age pyramid?
(1) Vanishing population
(3) Declining population
Post- reproductive
Reproductive
Pre-reproductive
(2) Stable population
(4) Expanding population
:. Correct Choice: (3)
57. Mass ofliving matter at a trophic level in an area at any time is called:
(1) Standing crop (2) Detritus (3) Humus (4) Standing state
:. Correct Choice: (1)
58. Given below is a sample of a portion of DNA strand giving the base sequence on the
opposite strands. What is so special shown in it?
5' _____ GAATTC ______ 3'
3' ___ CTTAAG ___ .5'
(1) Replication completed
(3) Start codon at the 5' end
(2) Deletion mutation
( 4) Palindromic sequence of base pairs
:. Correct Choice: (4)
59. The most common substrate used in distilleries for the production of ethanol is:
(1) Corn meal (2) Soya meal (3) Ground gram (4) Molasses
:. Correct Choice: (1)
Because of its abundance corn meal is commonly used in distilleries for ethanol
production.
60. Ground tissue includes:
(1) All tissues external to endodermis
(2) All tissues except epidermis and vascular bundles
(3) Epidermis and cortex
(4) All tissues internal to endodermis
:. Correct Choice: (2)
61. Eutrophication is often seen in:
(1) Deserts
(3) Ocean
(2) Fresh water lakes
(4) Mountains
:. Correct Choice: (2)
62. Which one of the following elements in plants is not remobilized?
(1) Phosphorus (2) Calcium (3) Potassium (4) Sulphur
:. Correct Choice: (2)
63. Where will you look for the sporozoites of the malarial parasite?
(1) Saliva of infected female Anopheles mosquito
(2) Red blood corpuscles of humans suffering from malaria
(3) Spleen of infected humans
(4) Salivary glands offreshly moulted female Anopheles mosquito
:. Correct Choice: (1)
64. 'Himgiri' developed by hybridization
rust pathogens is a variety of:
(1) Chilli (2) Maize
and selection for disease resistance against
(3) Sugarcane (4) Wheat
:. Correct Choice: (4)
65. Of the total incident solar radiation the proportion of PAR is:
(1) About 70% (2) About 60% (3) Less than 50% (4) More than 80%
:. Correct Choice: (3)
The visible light or photosynthetically active radiation consists of 400 - 700 nm
wavelength oflight and forms 45.1-46.7% of total solar radiation.
66. Which one of the following is not a part of a renal pyramid?
(1) Peritubular capillaries (2) Convoluted tubules
(3) Collecting ducts (4) Loops of Henle
:. Correct Choice: (1)
67. Which one of the following expanded forms of the following acronyms is correct?
(1) IPCC = International Panel for Climate Change
(2) UNEP =United Nations Environmental Policy
(3) EPA= Environmental Pollution Agency
(4) IUCN =International Union for Conservation of Nature and Natural Resources
:. Correct Choice: (4)
68. Which one of the following pairs of gases are the major cause of "Greenhouse
effect"?
(2) C02 and CO (3) CFCs and S02 (4) C02 and N20
:. Correct Choice: (4)
69. Which one of the following conditions correctly describes the manner of
determining the sex in the given example?
(1) Homozygous sex chromosomes (ZZ) determine female sex in Birds.
(2) XO type of sex chromosomes determine male sex in grasshopper
(3) XO condition in humans as found in Turner Syndrome, determines female sex
(4) Homozygous sex chromosomes (XX) produce male in Drosophila
:. Correct Choice: (2)
70. Nucellar polyembryony is reported in species of:
(1) Citrus (2) Gossypium (3) Triticum (4) Brassica
:. Correct Choice: (1)
71. Important site for formation of glycoproteins and glycolipids is:
(1) Vacuole (2) Golgi apparatus (3) Plastid (4) Lysosome
:. Correct Choice: (2)
72. Which one of the following is not a biofertilizer?
(1) Agrobacterium (2) Rhizobium (3) Nostoc (4) Mycorrhiza
:. Correct Choice: (4)
73. Secondary sewage treatment is mainly a:
(1) Physical process
(3) Chemical process
(2) Mechanical process
(4) Biological process
:. Correct Choice: (4)
74. At which stage ofHIV infection does one usually show symptoms of AIDS?
(1) When the infecting retrovirus enters host cells
(2) When viral DNA is produced by reverse transcriptase
(3) When HIV replicates rapidly in helper T-lymphocytes and damages large
number of these
(4) Within 15 days of sexual contact with an infected person
:. Correct Choice: (3)
75. In which one of the following pollination is autogamous?
(1) Geitonogamy (2) Xenogamy (3) Chasmogamy (4) Cleistogamy
:. Correct Choice: (4)
76. The figure given below shows a small part of human lung where exchange of gases
takes place. In which one of the options given below, the one part A, B, C or D is
correctly identified along with its function?
'
-~>t:~.~D
c-•
A
•B
Options:
(1) C: arterial capillary - passes oxygen to tissues
(2) A: alveolar cavity- main site of exchange of respiratory gases
(3) D: Capillary wall- exchange of 0 2 and C02 takes place here
(4) B: red blood cell- transport of C02 mainly
:. Correct Choice: (2)
84. Which one of the following groups of animals is correctly matched with its one
characteristic feature without even a single exception?
(1) Reptilia: possess 3-chambered heart with one incompletely divided ventricle
(2) Chordata: possess a mouth provided with an upper and a lower jaw
(3) Chondrichthyes: possess cartilaginous endoskeleton
(4) Mammalia: give birth to young ones
:. Correct Choice: (3)
85. Large Woody Vines are more commonly found in:
(1) Temperate forests
(3) Tropical rainforests
(2) Mangroves
(4) Alpine forests
:. Correct Choice: (3)
86. An organism used as a biofertilizer for raising soyabean crop is:
(1) Azotobacter (2) Azospirillum (3) Rhizobium (4) Nostoc
:. Correct Choice: (3)
87. Which one of the following plasma proteins is involved in the coagulation of blood?
(1) An albumin (2) Serum amylase (3) A globulin (4) Fibrinogen
:. Correct Choice: (4)
88. Ethanol is commercially produced through a particular species of:
(1) Saccharomyces (2) Clostridium (3) Trichoderma (4) Aspergillus
:. Correct Choice: (1)
89. Which one of the following structural formulae of two organic compounds is
correctly identified along with its related function?
0
Jr
0 CH2-0-C-R
0 I
R1-C-O-Oi 0
I 11
CH2-0-P-0-CH2- CH2
I I
OH ,N,
A CH, I Oi}
CH3
"6 N NH
8
(1) B: Adenine - a nucleotide that makes up nucleic acids
(2) A: Triglyceride - major source of energy
(3) B: Uracil- a component of DNA
(4) A: Lecithin- a component of cell membrane
:. Correct Choice: (4)
90. Which one of the following organisms is not an example of eukaryotic cells?
(1) Paramecium caudatum
(3) Euglena viridis
(2) Escherichia coli
(4) Amoeba proteus
:. Correct Choice: (2)
91. Given below is an incomplete table about certain hormones, their source glands and
one major effect of each on the body in humans. Identify the correct option for the
three blanks A, Band C.
GLAND SECRETION EFFECT ON BODY
A Oestrogen Maintenance of secondary sexual
characters
Alpha cells of Islets of B Raises blood sugar level
Langer hans
Anterior pituitary c Over secretion leads to gigantism
Options:
A B c
(1) Ovary Glucagon Growth hormone
(2) Placenta Insulin Vasopressin
(3) Ovary Insulin Calcitonin
(4) Placenta Glucagon Calcitonin
:.

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