Chemistry MCQ’s with Explanation for UHS MCAT

Medical college admission test commonly known as MCAT, which is conducted in Punjab for admission in Public Sector medical colleges of Punjab. University of Health and Sciences (UHS) conduct this test for MBBS & BDS admission in Public Sector medical colleges of Punjab. Every year more than 50000 students try their luck by taking this test but few of them succeed. UHS arrange this test for students once in a year all over the Punjab.

MCAT test is very difficult and you need a lot of preparation in order to pass it. Their test consist of MCQ’s from Chemistry, Physics, Biology and English. MCAT test is consist of concept based questions. Every student’s admission is based on MCAT test results and FSC marks. In MCAT test there is a negative marking. There are 5 marks for every correct answer and -1 for every wrong answer. can provide you a platform where you can prepare for this test and can also monitor your progress. We have MCQ’s from all subjects which are included in MCAT test along with their correct answers and explanations. To start your preparation Click here. Here are the some of the sample questions of Chemistry with explanation for MCAT preparation;


Standard hydrogen electrode has an arbitrary fixed potential of:

  • Answer A : 0 V
  • Answer B : 0 V
  • Answer C : 1 V
  • Answer D : 001 V

Correct: A


As it is used as standard and equilibrium is maintained between hydrogen gas and HCL in SHE, so its potential drop to zero.



Which of the hydrogen isotope has 2 neutrons?

  • Answer A : Protonium
  • Answer B : Deuterium
  • Answer C : Tritium
  • Answer D : None of the above

Correct: C


Hydrogen -1 >> This is normal hydrogen, or protium, which has just 1 proton, 0            neutrons, and 1 electron.

Hydrogen -2 >> This is hydrogen -2, or deuterium, which has 1 proton, 1 neutron and 1 electron.

Hydrogen -3 >> This is hydrogen -3, or tritium, which has 1 proton, 2 neutrons and 1 electron.


Which of the following is not a state function?

  • Answer A : Volume
  • Answer B : Temperature
  • Answer C : Work
  • Answer D : Enthalpy

Correct: C


In thermodynamics, a state function, function of state, state quantity or state variable is a property of a system that depends only on the current state of the system, not on the way in which the system acquired that state (independent of path). A state function describes the equilibrium state of a system. Work is not a property of a system, so it is not a state function.


What is the action of radiations on the enzymes?

  • Answer A : They are activated
  • Answer B: They are inactivated
  • Answer C : They give fast reaction
  • Answer D : Denatured

Correct: A


Enzymes are actually inactivated by the exposure to U.V light, Beta rays, Gamma rays and X-rays.

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