Question : Carrot is orange in colour because:

Option 1: It grows in the soil.

Option 2: It is not exposed to sunlight.

Option 3: It contains carotene.

Option 4: The entire plant is orange in colour.

Question : Electrical conductance through metals is called electronic conductance and it ______.

Option 1: does not depend on the temperature

Option 2: decreases with an increase in temperature

Option 3: increases with an increase in temperature

Option 4: decreases with a decrease in temperature

Question : Which one of the following statements about pyrolysis, which is a process for solid waste treatment, is incorrect?

Option 1: It converts the waste into solids, liquids and gases, of which the resultant liquids and gases can be used to produce energy.

Option 2: The process occurs at a temperature above 430^oC at atmospheric pressure.

Option 3: The process occurs under high pressure at a temperature above 430^oC.

Option 4: It is a thermochemical decomposition of organic waste.

Question : Pressure cooker cooks faster because:

Option 1: The boiling point decreases with the rise in pressure.

Option 2: It cooks the food at low pressure.

Option 3: A higher temperature is attained for cooking.

Option 4: The material of the cooker is a good conductor.

Question : Which of the following statements about Ganymede is not correct?

Option 1: It is the only moon known to have its own internally generated magnetic field.

Option 2: It is the largest natural satellite in our solar system.

Option 3: It is bigger than Mercury.

Option 4: It revolves around Saturn.