Convection

What is the reason for the occurrence of land breeze and sea breeze?

The convection current which arises when equatorial and polar regions of the earth receive unequal solar heat is called as:

Choose the method of heat conduction which could be affected by gravity?

What is the primary cause of monsoon winds? 

Air is a bad conductor of heat or partly conducts heat, still, the vacuum is to be placed between the walls of the thermos flask because

While measuring the thermal conductivity of a liquid, we keep the upper part hot and lower part cool, so that

The equatorial and polar regions of the earth receive unequal solar heat. The convection current arising due to this is called:

Which of the following process does not occur through convection

A liquid of mass m and specific heat c is heated to a temperature 2T. Another liquid of mass $\frac{m}{2}$ and specific heat 2c is heated to a temperature T. If these two liquids are mixed, the resulting temperature of the mixture is

Two liquids $A$ and $B$ are at $32°\mathrm{C} \text{and} 24°\mathrm{C}.$ When mixed in equal masses the temperature of the mixture is found to be $28°\mathrm{C}$ . Their specific heats are in the ratio of

Assertion: In a room containing air, heat can go from one place to another by radiation only.

Reason: In convection, heat is transferred from one place to another by actual motion of heated material.

Statement 1 : A hot iron bar placed under a running tap loses heat by convection.

Statement 2 : Convection involves flow of matter within a fluid due to unequal temperature of its parts.

Which one of the following processes depends on gravity?

Which one of the following processes depends on gravity?

In which of the following process, convection does not take place primarily?

In which of the following process, convection does not takes place primarily?