Hello friend here I am providing you sample Question papers of Polytechnic entrance exam, please have a look…..

Q1- The number of different words that can be formed by using the letters of the word ‘MISSISIPI’ is:

(1) 5067
(2) 6705
(3) 1520
(4) 2520

ANS 4

Q2- The equation of line which is parallel to the straight line 3x + 4y – 7 = 0 and passing through (1, 2) is:

(1)3x + 4y = 11
(2)3x+4y+11= 0
(3)4x-3y+2=0
(4)3x+4y+7=0

ANS 3

Q3- If f(y) = log y, then f(y) + f(1/y) is equal to :

(1) 2
(2) 0
(3) –1
(4) 1

ANS 2

Q4- A card is drawn at random from a pack of playing cards. The probability that it is red or an ace is:

(1) 1/13
(2) 1/52
(3) 17/52
(4) 4/13

ANS 4

Q5- If x = t2 and y = 2t, then the normal at t = 1 is

(1) x + y – 3 = 0
(2) x + y – 1 = 0
(3) x + y + 1 = 0
(4) x + y + 3 = 0

ANS 1

Q6- Which is correct for inside charged sphere:

(1) E ≠ 0, V = 0
(2) E=0, V= 0
(3) E≠0, V≠0
(4) E=0, V = 0

ANS 4

Q7- A parallel plate condenser is charged with a battery. After changing of the condenser battery is removed and two plates are separated from each other with the help of insulating handles, than:

(1) Capacitance decreases
(2) Capacitance increases
(3) Charge on plates increases
(4) Voltage between plates increase

ANS 1

Q8- In a coil the current changes from 2A to 4A, 0.05 sec. and the induced enf is 8 volt, the coefficient of self induction will be:

(1) 8H
(2) 0.02 H
(3) 0.2 H
(4) 0.8 H

ANS 3

Q9- In radioactive dis-integration the element shift by one place further after the emission of the particle:

(1) α-particle
2) β-particle
(3) γ-particle
(4) α,β and γ all

ANS 2

Q10- The energy of monatomic gas is:

(1) Only rotationa
(2) Only vibrational
(3) Only translator
(4) All the above

ANS 3

Q11- A boy is revolving on a dice with spreading hands. Suddenly the boy brings his near his body, the change in the system will be:

(1) Angular velocity increases
(2) Angular velocity decreases
(3) Angular velocity unchanged
(4) Angular momentum decreases

ANS 1

Q12- Which quantity doesn’t remains constant in simple harmonic motion :

(1) Time period
(2) Velocity
(3) Frequency
(4) Amplitude

ANS 2

Q13- Kind of bonding in H2 is:

(1) Covalent
(2) vander waals
(3) Ionic
(4) Metallic

ANS 2

Q14- The correct order of decreasing second ionisation enthalpy of Ti (22), V (23), Cr (24) and Mn (25) is

(1) Ti > V > Cr > Mn
(2) Cr > Mn > V > Ti
(3) V > Mn > Cr > Ti
(4) Mn > Cr > Ti > V

ANS (2)

Q15- How many moles of lead (II) chloride will be formed from a reaction between 6.5 g of PbO and 3.2 g of HCl?

(1) 0.029
(2) 0.044
(3) 0.333
(4) 0.011

ANS (1)

Q16- Number of moles of MnO4- required to oxidize one mole of ferrous oxalate completely in acidic medium will be

(1) 0.2 moles
(2) 0.6 moles
(3) 0.4 moles
(4) 7.5 moles

ANS (2)

Q17- Which one of the following arrangements does not give the correct picture of the trends indicated against it?

(1) F2 > Cl2 > Br2 > I2: Electronegativity
(2) F2 > Cl2 > Br2 > I2: Oxidizing power
(3) F2 > Cl2 > Br2 > I2: Electron gain enthalpy
(4) F2 > Cl2 > Br2 > I2: Bond dissociation energy

ANS (4)

Q18- which one of the following elements silicon should be doped so as to give p type of semiconductor?

(1) Boron
(2) Germanium
(3) Arsenic
(4) Selenium

ANS (1)

Q19-How many stereoisomers does the molecules have?

CH3CH = CHCH2CHBrCH3

(1) 2
(2) 4
(3) 6
(4) 8

ANS (2)

Q20- The relative reactivities of acyl compounds towards nucleophilic substitution are in the order of

(1) Acyl chloride > Ester > Acid anhydride > Amide
(2) Acyl chloride > Acid anhydride > Ester > Amide
(3) Ester > Acyl chloride > Amide > Acid anhydride
(4) Acid anhydride > Amide > Ester > Acyl chloride

ANS (2)