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 4

1 / 15

Metallic crystals are soluble in________________?

Polar solvent

Non polar solvent

Fused metal

None

2 / 15

Butyl chloride gives possible isomers ?

2

3

4

5

3 / 15

Which of the following solids show anisotropy___________________?

Plastic

Glass

Rubber

None of the above

4 / 15

The rectified spirit is________________?

12% alcohol

90% alcohol

95% alcohol

100% alcohol

5 / 15

As a substance moves from a solid to a liquid all of the following changes occur except ?

molecules become more disordered.

K.E of the molecules decreases

intermolecular forces become weaker.

molecules move more frequently.

6 / 15

Oxygen (molecular weight = 32) diffuses at a rate of 10cm3/min under the same conditions of temperature and pressure how fast will hydrogen (molecular weight = 2) diffuse ?

20cm3/min

40cm3/min

160cm3/min

2.5cm3/min

7 / 15

Methyl alcohol is not used as___________________?

a solvent

an anti freezing agent

a substitute for petrol

for denaturing of ethyl alcohol

8 / 15

All the following variables are used to describle gases except__________________?

pressure

volume

moles

density

9 / 15

Dempsters mass spectrometer has number of zones / parts_________________?

5

4

3

2

10 / 15

When 0.5 mole of phosphoric acid is dissolved in aqueous solution how many moles of -ve and +ve ions are collected altogether ?

0.5

1

1.5

2

11 / 15

The nucleus of an atom of every element will always contain____________________?

neutrons

protons and electrons

protons

protons and neutrons

12 / 15

Which of the following methods is used to estimate hydrogen in an organic compound ?

Combustion method

Dumas method

Kjeldahls method

All of the above methods are for different purposes

13 / 15

Isotopes differ in_________________?

properties which depend upon mass

arrangement of electrons in orbitals

chemical properties

all of the above

14 / 15

Combustion analysis is performed to determine__________________?

Empirical formula

Molecular mass

Molecular formula

Formula mass

15 / 15

Qualitative analysis is carried out for _________________?

identification of elements

estimation of amounts of elements

molar ration of elements

molar volume of elements

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