The act of cleaning a carpet by heating it with a stick is an example for inertia of

(a)

motion

(b)

direction

(c)

rest

(d)

momentum

At the surface of earth an object falling freely experiences an acceleration of

(a)

9.4 ms^-2

(b)

9.1 ms^-1

(c)

9.8 ms^-2

(d)

9.6 ms^-2

Rainbow formation is due to _____ water droplets.

(a)

Ionisation

(b)

absorption of sunlight

(c)

reflection and refraction of sunlight

(d)

reflection of sunlight

An object is placed at 12 cm from a convex lens whose focal length is 10 cm. The image must

(a)

Virtual and enlarged

(b)

real and reduced in size

(c)

virtual and reduced size

(d)

real and enlarged size

Objective of telescope is of

(a)

Short focal length & short aperture

(b)

Short focal length & large aperture

(c)

Large focal length & large aperture

(d)

Large focal length & short aperture

The resistance of a conductor is inversely proportional to its _______.

(a)

Volt

(b)

Length

(c)

Area

(d)

None of the above

Infrasound can be heard or produced by

(a)

dog

(b)

bat

(c)

rhinoceros

(d)

human beings

Complete the reaction: ₉₀Th²³⁴⟶ ₉₁Pa²³⁴+ ?

(a)

₂He⁴

(b)

_-1e⁰

(c)

₁e⁰

(d)

₁n⁰

Order of temperature of fusion reaction is ________kelvin.

(a)

10¹⁷

(b)

10⁷

(c)

10¹⁰

(d)

10³

Which of the following contains the largest number of molecules?

(a)

0.2 mol H₂

(b)

8.0 g H₂

(c)

17 g of H₂O

(d)

6.0 g of CO₂

Blister copper contains _________

(a)

50% pure copper

(b)

99% pure copper and 1% impurities

(c)

98% pure copper and 2% impurities

(d)

75% pure copper and 25% impurities

An example for a solution containing liquid solute in gas solvent is ____________

(a)

soda water

(b)

cloud

(c)

cork

(d)

smoke

When a double displacement reaction takes place, one of the products must be

(a)

Precipitate

(b)

Water

(c)

either (a) or (b)

(d)

neither (a) nor (b)

Identify the product formed when ethanol reacts with sodium

(a)

Sodium acetate

(b)

Sodium ethanate

(c)

Sodium ethoxide

(d)

Sodium formate

The_______ are also called polymorpho nuclear leucocytes

(a)

eosinophil

(b)

thrombocyte

(c)

neutrophil

(d)

lymphocyte

______ acts as a insulator.

(a)

myelin sheath(b)

(b)

synaptic junction

(c)

nodes of ranvier

(d)

glial cells

Premature shedding is caused by ______

(a)

auxin

(b)

ethylene

(c)

ABA

(d)

gibberellin

_______from anterior pituitary stimulates milk secretion

(a)

Oxytocin

(b)

Prolactin

(c)

Progestrone

(d)

Oestrogen

Pusa snowball is a disease resistant variety of________.

(a)

cowpea

(b)

cauliflower

(c)

wheat

(d)

rice