_______ can be used as memory or storage element in the computers.

(a)

Condutors

(b)

Insulators

(c)

Supercondutors

(d)

Semiconductors

Rain drops are spherical in nature because of _________

(a)

Frictional force

(b)

Buoyant force

(c)

Surface tension

(d)

Viscous force

An imaginary line perpendicular to the reflecting surface is called

(a)

imaginary line

(b)

curved line

(c)

Perpendicular line

(d)

normal

Which of the following element is named after a scientist?

(a)

Americium

(b)

Mercury

(c)

Nobelium

(d)

Neptunium

Enzymes and yeasts are called

(a)

catalysts

(b)

bio catalysts

(c)

chemical catalysts

(d)

physical catalysts

__________is an example for Lophotrichous

(a)

vibrio

(b)

Pseudomonas

(c)

Rhodospirillum

(d)

Corny bacterium

_____ is the giant kelp

(a)

Spirogyra

(b)

Volvox

(c)

Macrocystis

(d)

Chlorella

_________are called as building blocks of life

(a)

Cells

(b)

nucleus

(c)

Cell organelles

(d)

tissues

When was the first computer introduced?

(a)

1980

(b)

1947

(c)

1946

(d)

1985

___________ are the chemical substances, secreted by endocrine glands.

(a)

Hormones

(b)

Enzymes

(c)

Proteins

(d)

Fatty acids

Tux paint software is used to ________.

(a)

paint

(b)

program

(c)

scan

(d)

PDF

Find the odd one out.

(a)

Harmonium

(b)

Flute

(c)

Nadaswaram

(d)

Violin

A magnet attracts _______.

(a)

wooden materials

(b)

any metal

(c)

copper

(d)

iron and steel

_____ is called as Red planet.

(a)

Mercury

(b)

Venus

(c)

Earth

(d)

Mars

Solubility of carbon dioxide in water is high when the

(a)

pressure is low

(b)

pressure is high

(c)

temperature is high

(d)

None of the above

The base is a substance that gives _____ on dissolving in water.

(a)

OH^-

(b)

H⁺

(c)

OH

(d)

H

Which is known as syn gas?

(a)

Marsh gas

(b)

Water gas

(c)

Producer gas

(d)

Coal gas

The process of placing seeds in the soil is called

(a)

ploughing

(b)

sowing

(c)

crop production

(d)

crop rotation

Deforestation means ______

(a)

cleaning of forest

(b)

to grow plants

(c)

to look after plants

(d)

None of these.

If the ruler is not displayed in the screen, __________ option is clicked.

(a)

View -> ruler

(b)

View -> task

(c)

File -> save

(d)

Edit -> paste