The mass of a body is measured on planet Earth as M kg. When it is taken to a planet of radius half that of the Earth then its value will be ____kg

(a)

4 M

(b)

2 M

(c)

M/4

(d)

M

The eye defect ‘presbyopia’ can be corrected by

(a)

convex lens

(b)

concave lens

(c)

convex mirror

(d)

Bi focal lenses

Velocity of sound in the atmosphere of a planet is 500 ms^-1. The minimum distance between the sources of sound and the obstacle to hear the echo, should be

(a)

17 m

(b)

20 m

(c)

25 m

(d)

50 m

Kamini reactor is located at __________

(a)

Kalpakkam

(b)

Koodankulam

(c)

Mumbai

(d)

Rajasthan

______ is an important metal to form amalgam.

(a)

Ag

(b)

Hg

(c)

Mg

(d)

Al

Deliquescence is due to __________

(a)

Strong affinity to water

(b)

Less affinity to water

(c)

Strong hatred to water

(d)

Inertness to water

Powdered CaCO₃ reacts more rapidly than flaky CaCO₃ because of __________.

(a)

large surface area

(b)

high pressure

(c)

high concentration

(d)

high temperature

_________ is a sodium salt of sulphonic acids.

(a)

Fatty acids

(b)

Detergent

(c)

Soap

(d)

Unsaturated compounds

The animals which give birth to young ones are

(a)

Oviparous

(b)

Viviparous

(c)

Ovoviviparous

(d)

All the above

‘Heart of Heart’ is called

(a)

SA node

(b)

AV node

(c)

Purkinje fibres

(d)

Bundle of His

Which one of the following is an IUCD?

(a)

Copper – T

(b)

Oral pills

(c)

Diaphragm

(d)

Tubectomy

The number of chromosomes found in human beings are __________________.

(a)

22 pairs of autosomes and 1 pair of allosomes.

(b)

22 autosomes and 1 allosome

(c)

46 autosomes

(d)

46 pairs autosomes and 1 pair of allosomes.

In a hexaploid wheat( 2n = 6 x = 42 ) the haploid (n) and the basic(x) number of chromosomes respectively are

(a)

n = 7 and x = 21

(b)

n = 21 and x = 21

(c)

n = 7 and x = 7

(d)

n = 21 and x = 7

Global warming will cause

(a)

raise in level of oceans

(b)

melting of glaciers

(c)

sinking of islands

(d)

all of these

Where you will create category of blocks?

(a)

Block palette

(b)

Block menu

(c)

Script area

(d)

sprite