A car is being driven at a speed of 20 ms^-1 when brakes are applied to bring it to rest in 5 s. The decelaration produced in this case will be

(a)

+4 ms^-2

(b)

‒4 ms^-2

(c)

‒0.25 ms^-2

(d)

+0.25 ms^-2

When the reflecting surface is curved outwards the mirror formed will be

(a)

concave mirror

(b)

convex mirror

(c)

plane mirror

(d)

spherical mirror

______ is essential to perform separation by solvent extraction method.

(a)

Separating funnel

(b)

centrifuge machine

(c)

filter paper

(d)

sieve

Transpiration is best defined as _________ 

(a)

loss of water by the plant

(b)

evaporation of water from the aerial surfaces from the plant

(c)

loss of water in the form of water vapour from the underground parts of the plant body

(d)

release of water from the plant into the atmosphere

Find the group having only marine members

(a)

Mollusca

(b)

Porifera

(c)

Coelenterata

(d)

Echinodermata

Food and Adulteration Act was enforced by Government of India in the year __________.

(a)

1964

(b)

1954

(c)

1950

(d)

1963

The specific heat capacity of water is

(a)

4200 Jkg^-1K^-1

(b)

420 Jg^-1K^-1

(c)

0.42 Jg^-1K^-1

(d)

4.2 Jkg^-1K^-1

The unit of magnetic flux density is

(a)

weber

(b)

weber/metre

(c)

weber/metre²

(d)

weber. metre²

The element that would form anion by gaining electrons in a chemical reaction is ___________.

(a)

Potassium

(b)

Calcium

(c)

Fluorine

(d)

Iron

The nature of the tooth paste commonly used is in nature

(a)

acidic

(b)

basic

(c)

neutral

(d)

neutral

Which of the following is a complex tissue?

(a)

Parenchyma

(b)

Collenchyma

(c)

Xylem

(d)

Sclerenchyma

The structural and functional unit of the kidney is__________

(a)

villi

(b)

liver

(c)

nephron

(d)

ureter

Clouds float in atmosphere because of their low

(a)

density

(b)

pressure

(c)

velocity

(d)

mass

The period of revolution of planet A around the Sun is 8 times that of planet B. How many times is the distance of planet A as great as that of planet B?

(a)

4

(b)

5

(c)

2

(d)

3

Raagav brings his lunch every day to school in a plastic container which has resin code number 5. The container is made of

(a)

Polystyrene

(b)

PVC

(c)

Polypropylene

(d)

LDPE

All the factors of biosphere which affect the ability of organisms to survive and reproduce are called as _______________.

(a)

biological factors

(b)

abiotic factors

(c)

biotic factors

(d)

physical factors

Which one of the following is not an exotic breed of cow?

(a)

Jersey

(b)

Holstein-Friesan

(c)

Sahiwal

(d)

Brown Swiss

Binomial name of Nilavembu is

(a)

Leucas aspera

(b)

Andrographis paniculata

(c)

Crotolaria juncea

(d)

Cassia fistula

The primary organ infected during tuberculosis is

(a)

bone marrow

(b)

intestine

(c)

spleen

(d)

lungs

_________is an Operating System.

(a)

Android

(b)

Chrome

(c)

Internet

(d)

Pendrive