🔻Reactions in which energy is given out are known as …………. .

🔼Electrical resistivity of a given metallic wire depends upon

🔻The variable resistance is called

🌀Materials which allow larger currents to flow through them are called

📶Copper and aluminium are used for electric transmission lines because both posses …………… resistivity.

❇Unit of electric power may also be expressed as

⏺Name the sphere that supports life, and where living organisms exist.

🔺The variety of organisms living on the earth, is referred to as

⏯The plants found in a particular area are termed as

🔹The animal found in a particular area are termed as

↗Nucleus is separated from cytoplasm by

❇Petroleum is mainly a mixture of which one of the following class?

🔸Main constituent of LPG is

♨Name the petroleum product used for surfacing of roads.

↘Which one of the following gases is used in combustion?

↘Which is non-renewable source of energy’?

♻Burning coal in a closed room will produce

🔻Acid rain contains mainly

↘Which unit is used to measure astronomical distances?

◀Which planet is called morning star or evening star?

🔺Which of the following does not conduct electricity?