JIPMER MBBS Chemistry Question Papers 2015

JIPMER MBBS Chemistry Question Papers 2015 - You can download here Jawaharlal Institute of Postgraduate Medical Education and Research (JIPMER) Chemistry Question Sample Papers for admission to MBBS/BDS Programme for academic session 2015-16. All these question papers will help you for better exam preparation.

Solve Chemistry question papers in Multiple Choice Question (MCQs) format. If you are pursuing your intermediate science studies and targeting for JIPMER MBBS entrance examination 2015. You can solve these question papers online.

1. +I effect is shown by

(A) -N02
(B) -Cl
(C) -Br
(D) -CH3

2. 0.023 g of sodium metal is reacted with 100 cm3 of water. The pH of the resulting solution is ______.

(A) 11
(B) 10
(C) 12
(D) 9

3. 0.5 mole of each of H2, SO2 and CH4 are kept in a container. A hole was made in the container. After 3 hours, the order of partial pressures in the container will be

(A) pH2 > pSO2 > pCH4
(B) pH2 > pCH4 > pSO2
(C) pSO2 > pH2 > pCH4
(D) pSO2 > pCH4, > pH2

4. 10 cm3 of 0.1 N monobasic acid requires 15 cm3 of sodium hydroxide solution whose normality is

(A) 1.5 N
(B) 0.15 N
(C) 0.066 N
(D) 0.66 N

5. 10-6 M NaOH is diluted 100 times. The pH of the diluted base is

(A) between 6 and 7
(B) between 10 and 11
(C) between 7 and 8
(D) between 5 and 6

6. 2 gm of a radioactive sample having half life of 15 days was synthesised on 1st Jan 2009. The amount of the sample left behind on 1st March. 2009 (including both the days)

(A) 1 gm
(B) 0.5 gm
(C) 0 gm
(D) 0.125 gm

7. 2HI(g) Ý H2(g) + I2(g)

The equilibrium constant of the above reaction is 6.4 at 300 K. If 0.25 mole each of H2 and I2 are added to the system, the equilibrium constant will be

(A) 3.2
(B) 1.6
(C) 6.4
(D) 0.8

8. 2SO2(g) + O2(g) is an example for

(A) irreversible reaction
(B) heterogenous catalysis
(C) homogenous catalysis
(D) neutralisation reaction

9. 30 cc of HCl, 20 cc of 5 HNO3 and 40 cc of NaOH solutions are mixed and the volume was made up to 1 dm3. The pH of the resulting solution is

(A) 1
(B) 3
(C) 8
(D) 2

10. 5 moles of SO2 and 5 moles of O2 are allowed to react. At equilibrium, it was found that 60% of SO2 is used up. lf the partial pressure of the equilibrium mixture is one atmosphere. the partial pressure of O2 is

(A) 0.21 atm
(B) 0.41 atm
(C) 0.82 atm
(D) 0.52 atm

11. Which one of these is NOT TRUE for benzene?

(A) It forms only one type of monosubstituted product
(B) There are three carbon-carbon single bonds and three carbon-carbon double bonds
(C) Heat of hydrogenation of benzene is less than the theoretical value
(D) The bond angle between carbon-carbon bonds is 120°

12. Which one of the following is paramagnetic?

(A) N2
(B) NO
(C) CO
(D) O3

13. Which one of the following is a covalent crystal?

(A) Ice
(B) Rock salt
(C) Dry ice
(D) Quartz

14. Which one of the following DOES NOT involve coagulation?

(A) Formation of delta region
(B) Clotting of blood by the use of ferric chloride
(C) Peptization
(D) Treatment of drinking water by potash alum

15. Which one is not a constituent of nucleic acid?

(A) Uracil
(B) Guanidine
(C) Phosphoric acid
(D) Ribose sugar

SET B

1. 50 cm3 of 0.2 N HCI is titrated against 0.1 N NaOH solution. The titration is discontinued after adding 50 cm3 of NaOH. The remaining titration is completed by adding 0.5 N KOH. The volume of KOH required for completing the titration is ______.

(A) 10 cm3
(B) 12 cm3
(C) 10.5 cm3
(D) 25 cm3

2. 80 g of oxygen contains as many atoms as in

(A) 80 g of hydrogen
(B) 1 g of hydrogen
(C) 10 g of hydrogen
(D) 5 g of hydrogen

3. 9.65 C of electric current is passed through fused anhydrous magnesium chloride. The magnesium metal thus obtained is completely converted into a Grignard reagent. The number of moles of the Grignard reagent obtained is ______.

(A) 1 ´ 10-4
(B) 5 ´ 10-4
(C) 1 ´ 10-5
(D) 5 ´ 10-5

4. A 6% solution of urea is isotonic with

(A) 6% solution of Glucose
(B) 25% solution of Glucose
(C) 1 M solution of Glucose
(D) 0.05 M solution of Glucose

5. A bivalent metal has an equivalent mass of 32. The molecular mass of the metal nitrate is

(A) I92
(B) 188
(C) 182
(D) 168

6. A body of mass 10 mg is moving with a velocity of 100 ms-1. The wavelength of de-Broglie wave associated with it would be (Note : h = 6.63 ´ 10-34Js)

(A) 6.63 ´ 10-37m
(B) 6.63 ´ 10-31m
(C) 6.63 ´ 10-34m
(D) 6.63 ´ 10-35m

7. A body of mass x kg is moving with a velocity of 100 ms-1. Its de Broglie wavelength is 6.62 ´ 10-35m.
Hence x is (h = 6.62 ´ 10-34Js)

(A) 0.15 kg
(B) 0.2 kg
(C) 0.1 kg
(D) 0.25 kg

8. A buffer solution contains 0.1 mole of sodium acetate dissolved in 1000 cm3 of 0.1 M acetic acid. To the above buffer solution, 0.1 mole of sodium acetate is further added and dissolved.
The pH of the resulting buffer is equal to ______.

(A) pKa
(B) pKa - Log2
(C) pKa + L0g2
(D) pKa + 2

9. A buffer solution is prepared in which the concentration of NH3 is 0.30 M and the concentration of is 0.20 M. If the equilibrium constant, Kb for NH3 equals 1.8 × 10–5, what is the pH of this solution?

(A) 8.73
(B) 9.08
(C) 9.43
(D) 11.72

10. A complex compound in which the oxidation number of a metal is zero is

(A) K4 [Fe (CN)6]
(B) K3 [Fe (CN)6]
(C) [Ni (CO)4]
(D) [Pl (NH3 )4]Cl2

11. Which of the following is used to prepare Cl2 gas at room temperature from concentrated HCI?

(A) MnO2
(B) H2S
(C) KMnO4
(D) Cr2O3

12. Which of the following is not an ore of magnesium?

(A) Carnallite
(B) Dolomite
(C) Calamine
(D) Sea water

13. Which of the following has the highest bond order?

(A) N2
(B) O2
(C) He2
(D) H2

14. Which of the following gives an aldehyde on dry distillation?

(A) Calcium acetate + calcium benzoate
(B) Calcium formate + calcium acetate
(C) Calcium benzoate
(D) Calcium acetate

15. Which of the following does not give benzoic acid on hydrolysis?

(A) phenyl cyanide
(B) benzoyl chloride
(C) benzyl chloride
(D) methyl benzoate

SET C
1. A compound is formed by elements A and B. This crystallises in the cubic structure where the A atoms are at the comers of the cube and B atoms are at the body centres. The simplest formula of the compound is

(A) AB
(B) A6B
(C) A8B4
(D) AB6

2. A compound of ‘A’ and ‘B’ crystallises in a cubic lattice in which the ‘A’ atoms occupy the lattice points at the comers of the cube. The ‘B’ atoms occupy the centre of each face of the cube. The probable empirical formula of the compound is

(A) AB
(B) AB3
(C) AB2
(D) A3B

3. A covalent molecule AB3 has pyramidal structure. The number of lone pair and bond pair electrons in the molecule are respectively

(A) 3 and 1
(B) 1 and 3
(C) 2 and 2
(D) 0 and 4

4. A diabetic person carries a pocket of Glucose with him always, because

(A) Glucose reduces the blood sugar level.
(B) Glucose increases the blood sugar level almost instantaneously.
(C) Glucose reduces the blood sugar level slowly.
(D) Glucose increases the blood sugar level slowly.

5. A dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is ______.

(A) 2, 2 - dibromobutane
(B) 1, 1 - dibromopropane
(C) 1, 4 - dibromobutane
(D) 1, 2 - dibromoethane
6. A gas deviates from ideal behaviour at a high pressure because its molecules

(A) attract one another
(B) show the Tyndall effect
(C) have kinetic energy
(D) are bound by covalent bonds

7. 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

(A) 1 atm
(B) 0.5 atm
(C) 0.8 atm
(D) 0.9 atm

8. A ligand can also be regarded as

(A) Lewis acid
(B) Bronsted base
(C) Lewis base
(D) Bronsted acid

9. A metal present in insulin is

(A) copper
(B) iron
(C) zinc
(D) aluminium

10. A mixture of CaCl2 and NaCl weighing 4.44 g is treated with sodium carbonate solution to precipitate all the Ca+2 ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture (atomic mass of Ca = 40) is ______.

(A) 30.6
(B) 75
(C) 69.4
(D) 25

11. Which of the following compound would not evolve CO2 when treated with NaHCO3 solution?

(A) salicylic acid
(B) phenol
(C) benzoic acid
(D) 4-nitro benzoic acid

12. Which is not the correct statement about RNA and DNA?

(A) DNA is active in virus where RNA never appears in virus
(B) DNA exists as dimer while RNA is usually single stranded
(C) DNA contains deoxyribose as its sugar and RNA contains ribose
(D) RNA contains uracil in place of thymine (found in DNA) as a base

13. Which cycloalkane has the lowest heat of combustion per CH2 group?

(A) cyclopropane
(B) cyclobutanc
(C) cyclopontane
(D) cyclohexane

14. When a mixture of calcium benzoate and calcium acetate is dry distilled, the resulting compound is

(A) acetophenone
(B) benzaldehyde
(C) benzophenone
(D) acetaldehyde

15. What is the nature of glucose-glucose linkage in starch that makes its so susceptible to acid hydrolysis?

(A) Starch is hemiacetal
(B) Starch is acetal
(C) Starch is polymer
(D) Starch contains only few molecules of glucose