NEET Chemistry Mock Test 2019

Q1) Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?

I2 > Br2 > Cl2 > F2

Cl2 > Br2 > F2 > I2

Br2 > I2 > F2 > Cl2

F2 > Cl2 > Br2 > I2

Correct! Wrong!

Q2) Lithium has a bcc structure. Its density is 530 kg m-3 and its atomic mass is 6.94g mol-1. Calculate the edge length of a unit cell of Lithium metal. (NA = 6.02 × 1023 mol-1)

154 pm

352 pm

527 pm

264 pm

Correct! Wrong!

Q3) Which of the following is an analgesic?

Novalgin

Penicillin

Streptomycin

Chloromycetion

Correct! Wrong!

Q4) Consider the nitration of benezene using mixed conc. H2SO4 and HNO3. If a large amount of KHSO4 is added to the mixture, the rate of nitration will be:

faster

slower

unchanged

double

Correct! Wrong!

Q5) Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape?

1/8

1/4

3/8

1/2

Correct! Wrong!

Q6) The two polypeptides of human insulin are linked together by:

Hydrogen bonds

Phosphodiester bond

Covalent bond

Disulphide bridges

Correct! Wrong!

Q7. The pressure of H2 required making the potential of H2 –electrode zero in pure water at 298 K is:

10-14 atm

10-12 atm

10-10 atm

Correct! Wrong!

Q8) The addition of a catalyst during a chemical reaction alters which of the following quantities?

Entropy

Internal Energy

Enthalpy

Activation Energy

Correct! Wrong!

Q9) The ionic radii of A+ and B- ions are 0.98 × 10-10 m and 1.81 × 10-10 m. The coordination number of each ion in AB is:

Correct! Wrong!

Q10. Which is the correct statement for the given acids?

Phosphinic acid is a diprotic acid while Phosphonic acid is a monoprotic acid.

Phosphinic acid is a monoprotic acid while Phosphonic acid is a diprotic acid.

Both are triprotic acids.

Both are diprotic acids.

Correct! Wrong!

NEET Chemistry

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NEET Chemistry

Q1) Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?

Q2) Lithium has a bcc structure. Its density is 530 kg m-3 and its atomic mass is 6.94g mol-1. Calculate the edge length of a unit cell of Lithium metal. (NA = 6.02 × 1023 mol-1)

Q3) Which of the following is an analgesic?

Q4) Consider the nitration of benezene using mixed conc. H2SO4 and HNO3. If a large amount of KHSO4 is added to the mixture, the rate of nitration will be:

Q5) Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape?

Q6) The two polypeptides of human insulin are linked together by:

Q7. The pressure of H2 required making the potential of H2 –electrode zero in pure water at 298 K is:

Q8) The addition of a catalyst during a chemical reaction alters which of the following quantities?

Q9) The ionic radii of A+ and B- ions are 0.98 × 10-10 m and 1.81 × 10-10 m. The coordination number of each ion in AB is:

Q10. Which is the correct statement for the given acids?

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