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RPET Solved chemistry Model Question paper

1. The hybridization state of C atom in butendioic acid is :
(1) sp2
(2) sp3
(3) both two (4) sp
2. Which of the following is not a isomer of pentane :
(1) n-pentane
(2) 2, 2-dimethy 1 propane
(3) 2, 3-dimethy 1 butane
(4) 2-methy 1 butane
3. The oxidation number of C atom in Ch2CI2 and CCI4 are respectively :
(1) -2 and – 4 (2) 0 and – 4 (3) 0 and 4 (4) 2 and 4
4. Which of the following dissolves in lonic solvents :
(1) C6H5 (2) CH3OH (3) CCI4 (4) C5H12
5. The conjugate acid of HS is :
(1) S-2 (2) H2S2 (3) both two (4) none
6. Phenolphthalein of pH range [8-10] is used in which of the following type of
titration as a suitable indicator :
(1) NH4OH and HCI
(2) NH4OH and HCOOH
(3) NH4OH and C2H4O2
(4) NaOH and C2O4H2
7. Which of the following is iron are :
(1) Malachite (2) Hernatite (3) Siderite (4) Limonite
8. The molar concentration of chloride ions in the resulting solution of 300
ml.of 3.0 M NaCI and 200 ml. of 4.0 M BaCl2 will be :
(1) 1.7 M (2) 1.8 M (3) 5.0 M (4) 3.5 M
11. Which of the following compound is not aromatic :
(1) 1, 3-cyclobutene
(2) pyridine
(3) furane
(4) thiophene
12. Which of the following compound is used as refrigerant :
(1) CCI2F2
(2) CCI4
(3) CF4
(4) Acetone
13. Which of the following is weak acid :
(1) C6H6 (2) CH3-C≡CH (3) CH2=CH2 (4) CH3-C≡C-CH3
14. L.P.G. mainly consist of the following :
(1) Methane (2) Hydrogen (3) Acetylene (4) Butane
15. The solubility product of CaCo3 is 5 x 10-9. The solubility will be :
(1) 2.5 x 10-5 (2) 7 x 10-5 (3) 2.5 x 10-4 (4) 2.2 x 10-9
16. The outer electronic configuration of alkali earth metals is :
(1) nd10 (2) ns1
(3) np6
(4) ns2
17. The nature of 2, 4, 6-trinitrophenol is :
(1) Neutral (2) Basic (3) Acidic (4) Weak basic

RPET Solved chemistry Model Question paper

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