Chemistry Multiple-Choice Questions (MCQs) for Test Preparation ranging from Basic to Advanced. Chemistry Mcqs are from various parts of the Chemistry Subject. Chemistry Mcqs ranging from basic to advanced are available here. This will help you score higher on the Chemistry section of the test. These MCAT ECAT ETEA exam preparation Mcqs are beneficial for students and job seekers, such as MCAT ECAT ETEA test preparation, PPSC Test, FPSC Test, SPSC Test, KPPSC Test, BPSC Test, PTS, OTS, GTS, JTS, CTS.

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Created on April 01, 2022 By Preptestsonline

Chemistry MCQs Set 5

1 / 15

Which of the following statements is wrong about isotopes ?

they possess different mass number

they possess different physical properties

they possess same chemical properties

they possess different position in the periodic table

2 / 15

The mass of decimole of electrons (NA) is___________________?

1.008 mg

0.184 mg

0.054 mg

5.4 mg

3 / 15

Which one of the following is not the mono isotopic element ?

arsenic

uranium

iodine

nickel

4 / 15

Size of molecule depends upon________________?

Atomicity

Shape of molecule

Both A and B

Difficult to predict

5 / 15

Which of the following terms is used for the mass of chlorine 35.5 ?

relative atomic mass

mass number

atomic weight

relative isotopic mass

6 / 15

Avogadros number may represent_________________?

volume of particles

number of particles

mass of particles

All of the above

7 / 15

Which of the following ion formation is always exothermic ?

Uni-negative

Uni-positive

Di-negative

Di-positive

8 / 15

Which one is true about isotope ?

Same number of neutrons

Same mass number

Same physical properties

Same chemical properties

9 / 15

Molecular ions are formed by passing______________________?

High energy electron beam

? – particle

X-rays

All of the above

10 / 15

1 a.m.u =__________________?

1.6 x 10-27 kg

1.6 x 10-24 kg

1.6 x 10-26 kg

1.6 x 10-28 kg

11 / 15

The properties of an element mosly corresponds to that isotope which has greater_________________?

Mass number

Atomic mass

Relative abundance

all of the above

12 / 15

For which of the following compounds the term empirical formula cannot be applied ?

NaCl

H2O

CCI4

It can be applied to all mentioned above

13 / 15

When cationic molecular ions are allowed to pass through strong magnetic field in mass spectrometer which of the following ions is fallen__________________?

lighter

intermediate

heavier

are collected at same time

14 / 15

Isotopes of the same elements has__________________?

different number of protons

same number of neutrons

different number of neutrons

same mass number (nucleon number)

15 / 15

Which of the following is not a macromolecule ?

sand

haemoglobin

diamond

maltose

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