English Medium कक्षा १० - CBSE Question Bank Solutions for Science

What are the scientific names for the receptors in animals?

receptors for light

What are the scientific names for the receptors in animals?

 receptors for heat

What are the scientific names for the receptors in animals?

receptors for sound

What are the scientific names for the receptors in animals?

 receptors for smell

What are the scientific names for the receptors in animals?

 receptors for taste

When the switch S is closed in the figure given below, the pointer of the galvanometer moves to the right.  

If S is kept closed, will the pointer:

(a) return to zero?
(b) stay over on the right?
(c) move to the left and stay there
(d) move to and fro until S is opened

The north pole of a long bar magnet was pushed slowly into a short solenoid connected to a galvanometer. The magnet was held stationary for a few seconds with the north pole in the middle of the solenoid and then withdrawn rapidly. The maximum deflection of the galvanometer was observed when the magnet was ______.

A coil is connected to a galvanometer. When the N-pole of magnet is pushed into the coil, the galvanometer deflected to the right. What deflection, if any, is observed when:  

 the N-pole is removed?

A coil is connected to a galvanometer. When the N-pole of magnet is pushed into the coil, the galvanometer deflected to the right. What deflection, if any, is observed when: 

 the S-pole is inserted?

A coil is connected to a galvanometer. When the N-pole of magnet is pushed into the coil, the galvanometer deflected to the right. What deflection, if any, is observed when: 

the magnet is a rest in the coil? 

If fuse of 250 mA, 500 mA, 1 A, 5 A and 10 A were available, which one would be the most suitable for protecting an amplifier rated at 240 V, 180 W?  

How should the electric lamps in a building be connected so that the switching on or off in a room has no effect on other lamps in the same building?

Compare the nervous system and endocrine system (hormonal system) for control and coordination in humans.

Name a non-renewable source of energy other than fossil fuels. 

A newly planted sapling usually grows and matures into a tree in more than:

(a) 50 years
(b) 25 years
(c) 45 years
(d) 15 years

Name the product of petroleum that is used to drive heavy vehicles.

Give one example of a good domestic fuel. 

Coke is move valuable when used:

What substance is obtained as a residue when wood is burned in a limited supply of air?