MDCAT Chemistry Chapter 3 MCQ Test With Answer for (Atomic Structure)

In Chemistry, chapter 3 holds equal significance as the other chapters. The candidates planning to appear in the MDCAT should follow the syllabus. After completing the preparation, the students should solve the MCQs to analyze their preparation level and work on the weak areas. The online test is provided to facilitate the students so they can access them easily without wasting any time. The students who intend to appear in the MDCAT must take the maximum online test. It helps the students to perform well in the actual time, and in this way, they also learn about time management, which is a crucial part to consider. So save time and solve the online test at least once for better preparation and then appear in the MDCAT. To get updates about the MDCAT test, stay connected with us.

MCQ's Test For MDCAT Chemistry Chapter 3 Atomic Structure Online Test

Try The MCQ's Test For MDCAT Chemistry Chapter 3 Atomic Structure Online Test

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MDCAT Chemistry Chapter 3 Atomic Structure Online Test

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Question # 1

The mono atomic gases are

Question # 2

Theoretically, the temperature at which volume of gas become equal to zero is called

Question # 3

At constant volume, for a fixed number of moles of a gas the pressure of the gas increases with size of temperature due to

Question # 4

If volume of an ideal gas at 0°C 536cm3, what is volume at 1°C

Question # 5

Gas is enclosed in a container of 20cm3 with the moving piston. According to kinetic theory of gases, what is the effect on freely moving molecules of the gas if temperature is increased from 20°C to 100C.

Question # 6

The volume of a real gas

Question # 7

For an ideal gas, number of mole in terms of its pressure P, temperature T and gas constant is

Question # 8

One dm3 of H2 and O2: has different masses but no. of particles are

Question # 9

At higher temperature isotherm of Boyle's law moves away from both axis, is due to increase in:

Question # 10

The pressure of gas at constant temperature in a container of 2dm3 is 10 atm what will be its final pressure if it is connected with 10 dm3 container

Question # 11

The molecular speed Crms of gas is

Question # 12

According to the general gas equation, density of an ideal gas depends upon

Question # 13

The pressure exerted by gas molecules is due to their

Question # 14

If a gas expands at constant temperature

Question # 15

Density of a gas increases by

Question # 16

According to kinetic theory of gases kinetic energy depends on

Question # 17

The root mean square velocity of a gas is doubled when the temperature is

Question # 18

Helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is

Question # 19

Which is not true in case of an ideal gas?

Question # 20

The number of molecules in 22.4 dm3 of gas at 0°C and 1 atm are

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Prepare Complete Set Wise MDCAT Chemistry Chapter 3 Atomic Structure Online Test MCQs Online With Answers


In this topic,Student should be able to:

a) Identify and describe the proton, neutron and electron in terms of their relative charges and relative masses.

b) Discuss the behaviour of beams of protons, neutrons and electrons in electric fields.

c) Calculate the distribution of mass and charges within an atom from the given data.

d) Deduce the number of protons, neutrons and electrons present in both atoms and ions for a given proton and nucleon numbers/charge.

e) i) Describe the contribution of protons and neutrons to atomic nuclei in terms of proton number and nucleon number. ii) Distinguish between isotopes on the basis of different numbers of neutrons present.

f) Describe the number and relative energies of the s, p and d orbitals for the principal quantum numbers 1, 2 and 3 and also the 4s and 4p orbitals.

g) Describe the shapes of s, p and d-orbitals.

h) State the electronic configuration of atoms and ions given, the proton number/charge for period 1, 2, 3 and 4 (hydrogen to Krypton).

Explain:

i) Ionization energy.
ii) The factors influencing the ionization energies of elements.
iii) The trends in ionization energies across a Period and down a Group of the Periodic Table.

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Sr.# Question Answer
1 The molecular speed Crms of gas is
A. Independent of temperature
B. Proportional to the absolute temperature
C. Proportional to the square root of absolute temperature
D. Proportional to the square of absolute temperature
2 .The number of moles in 2.24 dm3 of H2 gas at STP is:
A. 1
B. 0.1
C. 10
D. 0.01
3 Which type of motion is exhibited by gases?
A. Vibrational
B. Transitional
C. Rotational
D. All of them
4 If temperature is 73K and volume is 146 cm3 then calculate the value of K=V/T
A. 5
B. 4
C. 3
D. 2
5 Theoretically, the temperature at which volume of gas become equal to zero is called
A. Boiling point of water
B. Zero absolute
C. Zero Kelvin
D. both B and C
6 If volume of an ideal gas at 0°C 536cm3, what is volume at 1°C
A. 373 cm3
B. 646 cm3
C. Becomes 0cm3
D. 746 cm3
7 Acording to the kinetic theory of gases
A. The pressure exerted by a gas is proportional to mean square velocity of the molecules
B. The pressure exerted by the gas is proportional to the root mean square velocity of the molecules
C. The root mean square velocity is inversely proportional to the temperature
D. The mean translational KE of the molecule is directly proportional to the absolute temperature
8 Density of a gas increases by
A. increasing value of R
B. decreasing value of R
C. increasing T
D. decreasing T
9 Under which condition CO has the maximum molar volume.
A. high T and P
B. Low T and High p
C. high T and low pressure
D. Low T and low P
10 At constant volume, for a fixed number of moles of a gas the pressure of the gas increases with size of temperature due to
A. increase in average molecular speed
B. increase in number of moles
C. increase in molecular attraction
D. decrease in the distance between the molecules
11 For an ideal gas, number of mole in terms of its pressure P, temperature T and gas constant is
A. PT/R
B. PRT
C. PV/RT
D. RT/P
12 According to the general gas equation, density of an ideal gas depends upon
A. Pressure
B. Temperature
C. Molar mass of the gas
D. All of the above
13 Helium atom is two times heavier than a hydrogen molecule. At 298 K, the average kinetic energy of a helium atom is
A. same as that of a hydrogen molecule
B. half that of a hydrogen molecule
C. two times that of a hydrogen molecule
D. four times that of hydrogen molecule
14 Which of the statement is applicable for both ideal and real gases molecules?
A. Have no forces of attraction
B. Collisions between the molecules is elastic
C. Molecules are in random movement
D. The actual volume of gas is negligible as compared to the volume of gas
15 The motion imparted to the gas molecules by gravity is
A. very small
B. very large
C. negligible
D. appreciable
16 The mono atomic gases are
A. Halogens
B. Noble gases
C. 6h group elements
D. Nitrogen and oxygen
17 At higher temperature what is true for gases
A. pressure is decreased
B. volume is decreased
C. number of moles are decreased
D. KE is increased
18 The volume of gas depends upon the------- moleules
A. Size of
B. Space between
C. Molecular weight
D. both a and b
19 The temperature of a gas is directly proportional to its
A. average translational kinetic energy
B. enthalpy
C. internal energy
D. hydration energy
20 Gas is enclosed in a container of 20cm3 with the moving piston. According to kinetic theory of gases, what is the effect on freely moving molecules of the gas if temperature is increased from 20°C to 100C.
A. Colliding capability of molecule will become lower
B. Pressure will become one half
C. Temperature has no effect on freely moving molecules
D. Volume will be increased

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