Gravitation — Science STD 9 — Question

The common characteristics of solid and liquid states are:

The technique used to obtain variety with high yield and other desirable characters is:

1. Intraduction
2. Selection
3. Hybridization
4. Both (a) and (b).

Which of the following statement is always correct?

According to the law of conservation of energy, total energy is:

When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment:

1. Air is heavier than bromine.
2. Both air and bromine have the same density.
3. Bromine is heavier than air.
4. Bromine cannot be heavier than air because it is going upwards against gravity.

An ionic compound will be formed by the combination of one of the following pairs of elements. This pair of elements is:

The infoldings in mitochondria are known as:

1. Cristae.
2. Matrix.
3. Cisternae.
4. Grana

What will be the correct sequence of temperature when 25°C and 45°C are converted to Kelvin scale and Fahrenheit scale?

Kharif crop is:

The unit of measurement used for expressing dimension (size) of cells is: