Two spheres have equal mass and volume in the ratio 2:1. The ratio of their density is ________.

(a)

1:2

(b)

2:1

(c)

4:1

(d)

1:4

________ is a derived quantity

(a)

length

(b)

mass

(c)

time

(d)

area

The slope of a velocity-time graph gives _______

(a)

velocity

(b)

distance

(c)

displacement

(d)

acceleration

Oxygen, hydrogen, and sulphur are examples for _______.

(a)

Metals

(b)

Non-metals

(c)

Metalloids

(d)

Inert gases

_____________ is a substance that is made up of three oxygen atoms chemically combined.

(a)

Oxygen

(b)

Hydrogen

(c)

Ozone

(d)

CO₂

The atomic number of an atom is the ______.

(a)

Number of neutrons

(b)

Number of protons

(c)

Total number of protons and neutrons

(d)

Number of atoms

____________ is neutral.

(a)

electron

(b)

proton

(c)

neutron

(d)

none

Climbing roots are seen in ______.

(a)

Betel

(b)

Black pepper

(c)

Both of them

(d)

None of them

The first aid is to ________ .

(a)

Save money

(b)

Prevent scars

(c)

Prevent the medical care

(d)

Relieve the pain

Which software is used to create symbols?

(a)

Photoshop

(b)

Illustrator

(c)

Vector Graphics

(d)

Photostory

Mercury is often used in laboratory thermometers because it _______.

(a)

is a harmless liquid

(b)

is silvery in colour and is attractive in appearance

(c)

Expands uniformly

(d)

is a low cost liquid

Small amounts of electrical current are measured in milliampere (mA). How many milliampere are there in 0.25 A ?

(a)

2.5 mA

(b)

25 mA

(c)

250 mA

(d)

2500 mA

_________ is not a chemical change.

(a)

Dissolution of ammonia in water

(b)

Dissolution of carbon-di-oxide in water

(c)

Dissolution of oxygen in water

(d)

Melting of polar ice caps

_______ helps in cell division

(a)

Endoplasmic reticulum

(b)

Golgi complex

(c)

Cnetrivole

(d)

Nucleus

The binomial name of pigeon is _______

(a)

Homo sapiens

(b)

Rattus rattus

(c)

Mangifera indica

(d)

Columbo livia

Tux Math software helps in learning the ________.

(a)

Painting

(b)

Arithmetic

(c)

Programming

(d)

Graphics

Reflection occurs , when the light ______.

(a)

about to reach a surface

(b)

approaches a surface

(c)

passes through a surface

(d)

None of these

The galaxy containing young and hot stars is _______.

(a)

elliptical galaxy

(b)

irregular galaxy

(c)

cluster

(d)

spiral galaxy

The lowest temperature at which a substance catch the fire is called its_______.

(a)

Boiling point

(b)

Melting point

(c)

Critical temperature

(d)

Ignition temperature

The Keyboard shortcut is used to cut the selected text ______.

(a)

Ctrl+ c

(b)

Ctrl+v

(c)

Ctrl+x

(d)

Ctrl+A