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RAMAN'S QUIZ CLASS XII QUIZ CONTEST

Total questions: 28

Worksheet time: 5mins

Name
Class
Date
1.

which of the folowing concentration term is affected by temperature

a)

molarity

b)

molality

c)

molefraction

d)

none of these

2.

Which of the following statement is true?

a)

Electrostatic force is a conservative force.

b)

Potential at a point is the work done per unit charge in bringing a charge from any point to infinity.

c)

Electrostatic force is non-conservative

d)

Potential is the productof charge and work.

3.

2 gm of NaOH is present in 200 ml of it's solution ,its molarity will be

a)

o.25

b)

.50

c)

25

d)

2.5

4.

Esterification of which type of alcohols is more

a)

teriary

b)

primary

c)

secondary

d)

all of above

5.

In which form the chemical compound RDX is used

a)

as an composition

b)

as an exposive

c)

as an nuclear weapon

d)

as an reactor

6.

Biochemical compounds are used as....

a)

skin treatment

b)

cooking oil

c)

food preservatives

d)

all of the above

7.

Which of the following compound is not used as alkali

a)

sodium hydroxide

b)

potassium hydroxide

c)

strontium hydroxide

d)

calcium hydroxide

8.

What name is given for the number of protons found in nucleus

4 lines
9.

what is the name of country in which MARIE CURIE born

a)

Poland

b)

New Zealand

c)

England

d)

Australia

10.

Which of the following statement is true?

a)

Electrostatic force is a conservative force.

b)

Potential at a point is the work done per unit charge in bringing a charge from any point to infinity.

c)

Electrostatic force is non-conservative

d)

Potential is the productof charge and work.

11.

1.Number of

chromosomes in Down's syndrome is 48

a)

46

b)

47

c)

48

d)

49

12.

Glucagon is an

enzyme produced in the

a)

salivary glands

b)

pituitary

glands

c)

thyroid

glands

d)

pancreas

13.

Pollination by

wind is called

a)

anemophily

b)

hydrophily

c)

zoophily

d)

entomophily


14.

If the father in a family has a disease while the mother is normal, the daughters only are inherited by this disease and not the sons. Name this type of disease?

a)

Autosomal recessive

b)

Autosomal dominant

c)

Sex-linked recessive

d)

Sex-linked dominant

15.

There are ________ different kinds of amino acids

a)

40

b)

20

c)

25

d)

30

16.

Emergency contraceptives may prevent pregnancy if used within 72 hrs of ______.

a)

Menstruation

b)

Ovulation

c)

Coitus

d)

Implantation

17.

Which of the following is not ART?

a)

ICSI

b)

ZIFT

c)

IUI

d)

MTP

18.

Meiosis does not occur in

a)

asexually reproducing diploid individuals

b)

sexually reproducing haploid individuals

c)

sexually reproducing diploid individuals

d)

all of these.

19.

The surface considered for Gauss’s law is called

a)

Closed surface

b)

Spherical surface

c)

Gaussian surface

d)

Plane surface

20.

The surface considered for Gauss’s law is called

a)

Closed surface

b)

Spherical surface

c)

Gaussian surface

d)

Plane surface

21.

The force per unit charge is known as

a)

electric flux

b)

electric field

c)

electric potential

d)

electric current

22.

Electric field lines provide information about

a)

field strength

b)

direction

c)

nature of charge

d)

all of these

23.

The SI unit of electric flux is

a)

N C-1 m-2

b)

N C m-2

c)

N C-2 m2

d)

N C-1 m2

24.

The unit of electric dipole moment is

a)

newton

b)

coulomb

c)

farad

d)

debye

25.

In a region of constant potential

a)

the electric field is uniform.

b)

the electric field is zero.

c)

there can be no charge inside the region.

d)

both (b) and (c) are correct.

26.

. Consider a uniform electric field in the z-direction. The potential is a constant

a)

for any x for a given z

b)

for any y for a given z

c)

on the x-y plane for a given z

d)

all of these

27.

In a parallel plate capacitor, the capacity increases if

a)

area of the plate is decreased.

b)

distance between the plates increases.

c)

area of the plate is increased.

d)

dielectric constantly decreases.

28.

Dielectric constant for a metal is

a)

zero

b)

infinite

c)

1

d)

10