It is difficult to cook vegetables on hills and mountains. Explain the reason.

Name the reaction which is commonly used in the conversion of vegetable oil to fats. Explain the reaction involved in detail.

A ball moving on a table top eventually stops. Explain the reason.

Assertion : It is difficult to move a cylce along the roda with its brakes on . Reason : Sliding friction is greater than rolling friction.

Assertion : In perennial plant species, it is difficult to define vegetative, reproductive and senescent phases. Reason : Perennial plants have very short life span.

In summer, ice is kept wrapped in a gunny bag. Explain the reason.

The bottom of a cooking utensil is painted black. Give the reason.

A piece of wood if left under water, comes to the surfce. Explain the reason.

Assertion : Cooking food is difficult on hills. Reason : The boiling point decreases with increase in pressure a) If both assertion and reason are true and reason is the correct explanation of assertion. b) If both assertion and reason are true and reason is not the correct explanation of assertion. c) If assertion is true and reason is false. d) If both assertion and reason are false.

Assertion: in comparison to ethyl chloride it is difficult to carry out nucleophilic on vinyl chloride Reason: Vinyl group is electron-donating .

Assertion : It is more difficult to push a magnet into a coil with more loops. Reason : Emf induced in the current loop resists the motion oif the magnet.