Why do you use viscous liquid in summer than in winter in motor car ?

Why do clocks not keep correct time in summer and winter ? Why is Invar used in making clock pendulum ?

When salt spread on road to melt ice and snow during winter, corrosion of motor cars is a major problem, justify.

What do you understand by viscosity of a liquid ?

Why some liquid wet the solids while others do not?

Explain why iron is colder to touch than wood in winter.

Why do you see two different types of replicating strands in the given DNA replication fork? Explain. Name of these strands.

Why do you think is mango called a true fruit and strawberry is called a false fruit?

If implementation of better techniques and new strategies are required to provide more efficient care and assistance to people, then why is there a statutory ban on amniocentesis? Write the use of this technique and give reason to justify the ban. Amniocentesis for sex-determination is banned in our country. Is this ban necessary? Comment. Or Do you justify the statutory ban on amniocentesis in our country? Give reasons.