Impulse is equals to

(a)

rate of change of momentum

(b)

rate of force and time

(c)

change of momentum

(d)

rate of change of mass

The resistance of a body to change its state of motion is called

(a)

force

(b)

momentum

(c)

inertia of motion

(d)

inertia of direction

The law that gives a qualitative definition of force is _______

(a)

Newton's I law

(b)

Newton's II law

(c)

Newton's III law

(d)

Law of gravitation

A force of 20N is acting on an object of mass 10 kg. The acceleration produced is

(a)

1 ms^-2

(b)

2 ms^-2

(c)

20 ms^-2

(d)

10 ms^-2

The distance between two bodies becomes 6 times more than the usual distance, then force becomes

(a)

36 times

(b)

6 times

(c)

12 times

(d)

\(\frac{1}{36}\) times

Where should an object be placed so that a real and inverted image of same size is obtained by a convex lens

(a)

f

(b)

2f

(c)

infinity

(d)

between f and 2f

For air, the refractive index is

(a)

1

(b)

infinity

(c)

0

(d)

1

The reciprocal of the focal length of the lens is

(a)

Magnification

(b)

Power

(c)

Principal focus

(d)

None

The value of universal gas constant

(a)

3.81 J mol^–1 K^–1

(b)

8.03 J mol^–1 K^–1

(c)

1.38 J mol^–1 K^–1

(d)

8.31 J mol^–1 K^–1

SI unit of heat is

(a)

calorie

(b)

joule

(c)

kilo calorie

(d)

kelvin

SI unit of resistance is

(a)

mho

(b)

joule

(c)

ohm

(d)

ohm meter

According to Ohm's law if voltage increase and resistance stays the same

(a)

Resistance decreases

(b)

Current increases

(c)

Current remains the same

(d)

Current decreases

The frequency, which is audible to the human ear is

(a)

50 kHz

(b)

20 kHz

(c)

15000 kHz

(d)

10000 kHz

Artificial radioactivity was discovered by_____

(a)

Becquerel

(b)

Irene Curie

(c)

Roentgen

(d)

Niels Bohr

_____________ aprons are used to protect us from gamma radiations

(a)

Lead oxide

(b)

Iron

(c)

Lead

(d)

Aluminium

Which of the following has the smallest mass?

(a)

6.023 × 10²³ atoms of He

(b)

1 atom of He

(c)

2 g of He

(d)

1 mole atoms of He

The basis of modern periodic law is__________.

(a)

atomic number

(b)

atomic mass

(c)

isotopic mass

(d)

number of neutrons

The number of components in a binary solution is _____________

(a)

2

(b)

3

(c)

4

(d)

5

Photolysis is a decomposition reaction caused by __________

(a)

heat

(b)

electricity

(c)

light

(d)

mechanical energy

The IUPAC name of an organic compound is 3-Methyl butan-1-ol. What type compound it is?

(a)

Aldehyde

(b)

Carboxylic acid

(c)

Ketone

(d)

Alcohol

Which is formed during anaerobic respiration

(a)

Carbohydrate

(b)

Ethyl alcohol

(c)

Acetyl CoA

(d)

Pyruvate

Mammals are ______________ animals.

(a)

Cold blooded

(b)

Warm blooded

(c)

Poikilothermic

(d)

All the above

The wall of human heart is made of

(a)

Endocardium

(b)

Epicardium

(c)

Myocardium

(d)

All of the above

There are ________ pairs of cranial nerves and _______ pairs of spinal nerves.

(a)

12, 31

(b)

31, 12

(c)

12, 13

(d)

12, 21

LH is secreted by

(a)

Adrenal gland

(b)

Thyroid gland

(c)

Anterior pituitary

(d)

Hypothalamus.

What is true of gametes?

(a)

They are diploid

(b)

They give rise to gonads

(c)

They produce hormones

(d)

They are formed from gonads

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.

Paleontologists deal with

(a)

Embryological evidences

(b)

Fossil evidences

(c)

Vestigial organ evidences

(d)

All the above

The miracle rice which saved millions of lives and celebrated its 50th birthday is _______.

(a)

IR 8

(b)

IR 24

(c)

Atomita 2

(d)

Ponni

Polyphagia is a condition seen in

(a)

Obesity

(b)

Diabetes mellitus

(c)

Diabetes insipidus

(d)

AIDS

____________ is not a symptom of AIDS.

(a)

Increase in number of WBC

(b)

Lack of appetite

(c)

Weight loss

(d)

Swelling of lymph nodes

Common energy source in village is

(a)

electricity

(b)

coal

(c)

biogas

(d)

wood and animal dung

The project for conservation of_______was launched in 1976

(a)

tiger

(b)

elephant

(c)

lion

(d)

crocodile

Where you will create category of blocks?

(a)

Block palette

(b)

Block menu

(c)

Script area

(d)

sprite

To choose a block we use__________

(a)

Script area

(b)

Block Menu

(c)

Block palette

(d)

Script Editor