P-1 Question Bank — Science STD 10 — Question

Latent heat of fusion, Q = mL.

Purple has the lowest refractive index.

• Right

• Wrong

Benzene is a cyclic unsaturated hydrocarbon.

• Right

• Wrong

As it rises above the earth's surface, its value increases.

In a compound microscope, a real image acts as an object for the eyepiece.

If a spacecraft has to be sent away from the influence of the earth’s gravitational field, its velocity must be less than the escape velocity.

1 kg of dry air at a temperature of 40 °C can hold a maximum of 49 g of water vapour.

• Right

• Wrong

The velocity of light is different in different media.

If the distance between two masses is doubled, the gravitational force between them becomes less than the previous force.
- right
-wrong

Atomic number is the number of protons or electrons in the nucleus.