General Science-81

a.     Phosphorous

b.     Nitrogen

c.     Calcium

d.     Carbon

1.     The best technique employed for concentration and purification of a compound is:

a.     Sublimation

b.    Chromatography

c.     Steam Distillation

d.     Fractional Distillation

2.      Match list-I with list-II and select the correct answer using the codes given below the lists:
      List-I        List-II
A. Archeozoic   1.Soft-bodied animals
B. Proterozoic  2. Brachiopods
C. Mesozoic     3.Reptiles
D. Coenozoic   4.Mammals

Codes:
    A B C D

a.     1 2 3 4

b.     2 1 3 4

c.     1 2 4 3 

d.     2 1 4 3

3.     Which of the following has both an endoskeleton and exoskeleton?

a.     Frog

b.     Cockroach

c.     Earthworm

d.     Snake

4.     Brass contains:

a.     Cu + Sn

b.     Cu + Ni

c.     Cu + Zn

d.     Mg + Al

5.     Example of non-ionizing mutagen is:

a.     X-rays

b.    UV rays

c.     Gamma rays

d.     moving electrons

6.     Change in one base in m-RNA leading to termination of polypeptide is known as which type of mutations?

a.     Sense

b.    Non-sense

c.     Gibberish

d.     Framshift

7.     Which of the following compounds would undergo cannizaro’s reaction?

a.     Propionaldehyde

b.    Benzaldehyde

c.     Bromobenzene

d.     Acetaldehyde

8.     Amino acids which are not synthesized in the body are called:

a.     Alpha amino acid

b.     Non-essential amino acid

c.     Essential amino acid

d.     Gamma amino acid

9.     Which does not show resonance?

a.     Benzene

b.     Aniline

c.     Ethylamine

d.     Toluene

10.  Most of cereals belong to:

a.     Malvacea

b.     Solanacea

c.     Graminea

d.     Leguminosae

11.  Sporophyte of fern produces:

a.     Seeds

b.     Pollen

c.     Spores

d.     None of these

12.  Duramen or heart wood is:

a.     Outer region of the secondary wood

b.    Inner region of the secondary wood

c.     Region of pericycle

d.     Another name of cambium

13.  The edible part of cauliflower is:

a.     Bud

b.    Flower

c.     Inflorescence

d.     Fruit

14.  Lichens are the best indicator of:

a.    Air pollution in cities

b.     Water pollution in the hills

c.     Water pollution in the rivers

d.     Soil pollution in the deserts

15.  kg2 m-2 represents the unit of

a.     kinetic energy

b.     work done

c.     potential energy

d.     all the above

16.  A body is dropped from a certain height from the ground. When it is halfway down, it possesses,

a.     only K.E.

b.    both K.E. and P.E.

c.     only P.E.

d.     zero energy

17.  One kilowatt is approximately equal to

a.    1.34 hp

b.     1.56 hp

c.     2.50 hp

d.     1.83 hp

18.  Two bodies of equal weight are kept at heights of h and 1.5 h respectively.
The ratio of their P.E. is

a.     3:2

b.    2:3

c.     1: 1

d.     None of these

19.  The work done by a centripetal force

a.     Increases by decreasing the radius of the circle

b.     Decreases by increasing the radius of the circle

c.     Increases by increasing the mass of the body

d.     Is always zero

20.  Certain weight is attached with a spring. It is pulled down and then released. It oscillates up and down. Its K.E. will be

a.    Maximum in the middle of the movement

b.     Maximum at the bottom

c.     Maximum just before it is released

d.     Constant

21.  Energy cannot be measured in

a.    Js

b.     Ws

c.     kWh

d.     erg

22.  When the momentum of a body decreases by
10%, its K.E. decreases by
a 20%
b 0%
c 36%
d none of these

23.  Which of the following physical quantity is different from others?
a Work
b Kinetic energy
c Force
d Potential energy