Work And Energy — Science STD 9 — Question

A water tanker filled up to two-thirds of its tank with water is running with a uniform speed. When the brakes are suddenly applied, the water in its tank would:

1. Move backward.
2. Move forward.
3. Rise upwards.
4. Remain unaffected.

Which is the most effective method of separating mixtures of miscible volatile liquids?

Dalton’s atomic theory successfully explained:
(i) Law of conservation of mass.
(ii) Law of constant composition.
(iii) Law of radioactivity.
(iv) Law of multiple proportion.

3.42g of sucrose are dissolved in 18g of water in a beaker. The numbers of oxygen atoms in the solution are:

Speed of a body depends on:

The structure that are involved in the manufacture and supply of energy to the cell are:

Sum of atomic masses of all atoms in a formula unit of an ionic compound is known as :

One millionth of a metre is:

The boiling points of diethyl ether, acetone and n-butyl alcohol are 35°C, 56°C and 118°C, respectively. Which one of the following correctly represents their boiling points in kelvin scale:

Which among the following is not the property of weight: