Ice is packed in saw dust because

• saw dust will not get melted easily

• saw dust is poor conductor of heat

• saw dust does not stick to the ice

• saw dust is a good conductor of heat

Ethanol containing 5% water is known as

• rectified spirit

• absolute alcohol

• dilute alcohol

• power alcohol

Rusting is ..............

• electrolysis

• oxidation

• redox reaction (Oxidation and Reduction)

• reduction

Which amongst the following is not a Cation?

• Aluminium ion

• Copper ion

• Sulphate ion

• Zinc ion

105.

Oxide of which of the following will turn red litmus blue?

• Magnesium

• Phosphorus

• Sulphur

• Carbon

Which of the following are highly compressible?

• Solid

• Liquid

• Gas

• Solid and Liquid

PET is a very familiar form of ............... It is used for making bottles.

• nylon

• acrylic

• polyester

• rayon

Which of the following gases is heavier than oxygen?

• Carbon dioxide

• Ammonia

• Methane

• Helium

At what temperature (in Fahrenheit) pure water freezes?

• 32

• 0

• 48

• 37

Process of gaining electrons is known as .............

• Oxidation

• Reduction

• Radiation

• Both Oxidation and Reduction