The correct relation among the following is 

(a)

Speed = distance × time

(b)

Speed = distance / time

(c)

Speed = time / distance

(d)

Speed = 1 / (distance × time)

_________is essential to perform winnowing activity.

(a)

Rain

(b)

Soil

(c)

Water

(d)

Air

Which of the following are the characteristics of living beings?
(i) Respiration
(ii) Reproduction
(iii) Adaptation
(iv) Excretion
Choose the correct one

(a)

(i), (ii), and (iv) only

(b)

(i), (ii) only

(c)

(ii) and (iv) only

(d)

(i), (ii), (iii) and (iv)

Bacteria are very small _________ microorganism.

(a)

Prokaryotic

(b)

Eukaryotic

(c)

Protozoa

(d)

Acellular

The unit of heat is

(a)

newton

(b)

joule

(c)

volt

(d)

celsius

Out of the following an example of a desirable change is

(a)

rusting

(b)

change of seasons

(c)

earthquake

(d)

flooding

The ‘control centre’ of the eukaryotic cell is

(a)

Cell wall

(b)

Nucleus

(c)

Vacuoles

(d)

Chloroplast

A freely suspended magnet always comes to rest in the ________direction

(a)

North - east

(b)

South - west

(c)

East - west

(d)

North - south

It is an undesirable change that occurs in air and water.

(a)

Recycling

(b)

Reuse

(c)

Pollution

(d)

Reduce

Find out Paid and Proprietary software from the given list

(a)

Windows

(b)

MAC OS

(c)

Adobe Photoshop

(d)

All the above