States Of Matter : Gases & Liquids - Practice Test (1) - Class 9 MCQ

solid, liquid and plasma

solid, liquid and gas

solid, glasses and gases

atoms, molecules and ions

less than zero

depends on the speed of the molecule

zero

greater zero

25

5 mL2. 202.5 mL

108.2 mL

302.5 mL

temperature increases

pressure decreases

pressure increases

temperature decreases

32 grams of gas

6.022 × 10236.022 × 1023dioxygen molecules

16 grams of gas

22.7 liters of gas

chemical properties depend on non bonding forces whereas physical properties depend on intermolecular bonding forces

chemical properties depend on intramolecular bonding forces whereas physical properties depend on intermolecular nonbonding forces

chemical properties depend on covalent bonding forces whereas physical properties depend on energy supplied

chemical properties depend on intermolecular non bonding forces whereas physical properties depend on intermolecular bonding forces

of experimental errors

molecules repel each other

size of molecules cannot be measured

molecules interact with each other

6.224 × 10⁴ Pa

8.314 × 10⁴ Pa

7.452 × 10⁴ Pa

9.313 × 10⁴ Pa

viscosity

critical phenomena

pressure

surface tension

Low temperature only

High temperature and Low pressure

Low pressure only

High pressure and Low temperature

an electron cloud that causes temporary dipoles

a permanent magnetic dipole moment

an induced electrical dipole moment

a permanent electrical dipole moment

0.8 bar

2.6 bar

1.8 bar

3.7 bar

p1 > p2 > p3 > p4

p1 = p2 = p3 = p4

p1 < p2 < p3 < p4

p1 < p2 = p3 < p4

Decreasing the volume of the vessel to one-half

Decreasing the quantity of water

Adding salt to water

increasing the temperature of water

In hydrogen bonding H atom becomes partially positive and is attracted to the more negative O atom

In hydrogen bonding H atom becomes partially positive and is attracted to the more negative F atom

In hydrogen bonding H atom becomes partially positive and is attracted to the more negative N atom

In hydrogen bonding H atom becomes partially negative and is attracted to the more positive N atom

number of moles is very low

temperature is very low

pressure is very high

pressure is very low

3g/dm³

4g/dm³

2g/dm³

5g/dm³

charge of interacting particles

mass of interacting particles

strength of permanent dipoles in the particles

polarisability of interacting particles

it takes less energy to separate particles completely than just to free them from their fixed positions in the solid

it takes more energy to separate particles completely than just to free them from their random positions in the solid

it takes no energy to separate particles completely than just to free them from their oscillating positions in the solid

it takes more energy to separate particles completely than just to free them from their fixed positions in the solid

dipole-dipole attraction

dispersion force (or London force)

hydrogen bond

ion-dipole forces

it is mixture of solid and liquid

it is solid

it is liquid

it is gas

1325.9 g

1120.3 g

4.05 mL of phosphorus vapour weighs 0.0625 g at 546 ∘C∘C and 0.1 bar pressure. What is the molar mass of phosphorus?1. 1325.9 g2. 1120.3 g

05 mL of phosphorus vapour weighs 0.0625 g at 546 ∘C∘C and 0.1 bar pressure. What is the molar mass of phosphorus?1. 132

less than unit electronic charge

more than unit electronic charge

equal to unit electronic charge

double the unit electronic charge

is greater at the lower temperature

is independent of temperature

is greater at the higher temperature

is lesser at the higher temperature