Inertia of a body depends on 

(a)

weight of the object

(b)

acceleration due to gravity of the planet

(c)

mass of the object

(d)

Both a & b

If a substance is heated or cooled, the change in mass of that substance is

(a)

positive

(b)

negative

(c)

zero

(d)

none of the above

SI unit of resistance is

(a)

mho

(b)

joule

(c)

ohm

(d)

ohm meter

Unit of radioactivity is _____________

(a)

roentgen

(b)

curie

(c)

becquerel

(d)

all the above

Which of the following is a triatomic molecule?

(a)

Glucose

(b)

Helium

(c)

Carbon dioxide

(d)

Hydrogen

The basis of modern periodic law is__________.

(a)

atomic number

(b)

atomic mass

(c)

isotopic mass

(d)

number of neutrons

_____ is a relative periodic property.

(a)

atomic radii

(b)

ionic radii

(c)

electron affinity

(d)

electronegativity

When pressure is increased at constant temperature the solubility of gases in liquid _________

(a)

No change

(b)

increases

(c)

decreases

(d)

no reaction

Which of the following represents a precipitation reaction?

(a)

A_(s) + B_(s) → C_(s) + D_(s)

(b)

A_(s) + B_(aq) → C_(aq) + D_(l)

(c)

A_(aq) + B_(aq) → C_(s) + D_(aq)

(d)

A_(aq) + B_(s) → C_(aq) + D_(l)

TFM in soaps represents ___________ content in soap

(a)

mineral

(b)

vitamin

(c)

fatty acid

(d)

carbohydrate

Kreb’s cycle takes place in

(a)

chloroplast

(b)

mitochondrial matrix

(c)

stomata

(d)

inner mitochondrial membrane

Mammals are ______________ animals.

(a)

Cold blooded

(b)

Warm blooded

(c)

Poikilothermic

(d)

All the above

State Newton’s second law.

Distinguish between ideal gas and real gas.

Name any two devices, which are working on the heating effect of the electric current.

Name three animals, which can hear ultrasonic vibrations.

Define Hydrated salt.

State the importance of biofertiliser.

What is Stage?

The ratio of masses of two planets is 2:3 and the ratio of their radii is 4:7. Find the ratio of their accelerations due to gravity.

State Ohm’s law.

Give any two uses of radio isotopes in the field of agriculture?

N₂ + 3 H₂ → 2 NH₃
(The atomic mass of nitrogen is 14, and that of hydrogen is 1)
1 mole of nitrogen (_______g) +
3 moles of hydrogen ( _________ g) →
2 moles of ammonia ( _________ g)

What are called thermolysis reactions?

Draw and label the structure of oxysomes.

What is the importance of rainwater harvesting?

Give the applications of universe law gravitation.

Compare the properties of alpha, beta and gamma radiations.

Enumerate the functions of blood.