Force and Laws of Motion — Science STD 9 — Question

Intercalated disc is present in:

Which one will not increase the rate of evaporation of a liquid:

The botanical name if Sunn hemp is:

1. Crotalaria juncea.
2. Lens culinaris.
3. Trifolium alexandrium.
4. Sesbania aculeate.

Solar radiation heat-up:

1. Land faster than the water bodies.
2. Land slower than the water bodies.
3. Equally both land and water bodies.
4. Neither land nor water bodies.

The force of attraction between two unit point masses separated by a unit distance is called

You have to push with 15N of force to move it 10 meters. How much work do you do?

The mass of moon is about 0.012 times that of the earth and its diameter is about 0.25 times that of earth. The value of G on the moon will be:

On converting 25°C, 38°C and 66°C to Kelvin scale, the correct sequence of temperature will be:

Match column I with the column II.

	Column I		Column II
A.	Solution	I.	Chalk in water
B.	Colloid	II.	Tincture of iodine
C.	Suspension	III.	Starch in water
D.	Homogeneous	IV.	A mixture of chalk and sand
E.	Heterogeneous	V.	Air

When a rubber balloon held between the hands is pressed, its shape changes. This happens because:

1. Balanced forces act on the balloon.
2. Unbalanced forces act on the balloon.
3. Frictional forces act on the balloon.
4. Gravitational forces act on the balloon.