PPSC Chemistry Aspirants Test 5: States of Matter Questions

This document presents a solved assignment designed for PPSC Chemistry aspirants, focusing on the fundamental concepts of states of matter. The assignment covers various topics, including deviations from ideal gas behavior, rates of effusion, density, Van der Waals constants, and kinetic energy of gases. It explores the properties of solids, such as crystal structures (NaCl, diamond), and the nature of covalent and hydrogen bonds. Furthermore, the assignment delves into gas laws (Charles's law), vapor pressure, and intermolecular forces. The questions assess the understanding of phase transitions, boiling points, and the relationship between temperature, pressure, and volume. The document provides a comprehensive review of key concepts related to the states of matter, making it a valuable resource for exam preparation.

TEST 5
STATES OF MATTER
SHAKEEL ALAM
PPSC CHEMISTRY
ASPIRANTS

1. which of the following gas show more deviation
from ideal behavior
a) CO 2
b) SO2
c) N2
d) None

2. What is relative rate of effusion of CO and CO2
a) CO is 1.25 time faster than CO2
b) CO2 is 1.25 time faster than CO
c) CO is 3.75 time faster than CO2
d) none of these

3. Which one has lowest density at room temperature
a) Ne
b) N2
c) NH3
d) None

4. Unit of constant ‘a’ are
a) Nm-4 mol-2
b) Nm+6 mol-2
c) Nm+4 mol-2
d) None

5. Hydrogen effuses four time more rapidly than
unknown gas
a) 16
b) 48
c) 32
d) None

6. Very small values of van Der Waal constants
show that
a) The molecules of the gas are big sized
b) Gas is sufficiently polar
c) The gases are non-ideal
d) None

7. Which of the following has least Tc
a) NH3
b) H2O
c) O2
d) CO2

8. Kinetic energy of 3 moles of a gas is
a) 3RT
b) RT/2
c) 2RT
d) None

9. At what temperature, the H2 molecule will have
same KE as N2 molecule at 280K
a) 280K
b) 400K
c) 40K
d) None

10. Quantitative relation of Charles law is hold only
for
a) Kelvin scale
b) Celsius scale
c) Farhenheit Scale
d) None

11. Equal masses of methane and oxygen are mixed
in an empty container at 25C. The fraction of toal
pressure exerted by oxygen is
a) 1/3
b) 8/9
c) 1/9
d) 16/17