Sound — Science STD 8 — Question

The type of pollution which is likely to affect Taj Mahal in Agra to a greater extent is:

Mohan is writing some statements, choose the incorrect statements and help him:

A rectangular wooden block has length, breadth and height of 50cm, 25cm and10cm, respectively. This wooden block is kept on ground in three different ways, turn by turn. Which of the following is the correct statement about the pressure exerted by this block on the ground?

The force exerted by the earth to pull the object towards itself is called:

The deficiency of one of the following in the diet of a person for a considerable time can lead to a disease called night blindness. This one is:

Baby before being born is termed as

Electric current is to be passed from one body to another. For this purpose, the two bodies must be Joined by

A Look at the figure given below.
Which of the following forces is necessary for a person to climb the mountain?

Which one of the following can displace magnesium from magnesium sulphate solution?

The epicentre of an earthquake is: