In the manufacture of banaspati ghee, the gas used is _____.

1. 1. Hydrogen
   2. Nitrogen
   3. Oxygen
   4. Helium

The protein content in wheat is approximately _____.

1. 1. 12%
   2. 8%
   3. 6%
   4. 15%

What are the primary colours?

1. 1. Blue, Green, Yellow
   2. Red, Blue, Green
   3. Yellow, Red, Blue
   4. Green, Black, White

Which of the following is an alloy?

1. 1. Zinc
   2. Tin
   3. Gold
   4. Bronze

The outermost layer of skin is called _____.

1. 1. Epiglottis
   2. Epidermis
   3. Ligament
   4. Cartilage

In the microphone, used in the public address system:

1. 1. Amplification is not required
   2. Electric signals are first converted into sound waves
   3. Sound waves are directly transmitted
   4. Sound waves are converted into electric signals which are amplified and transmitted

A body immersed in a fluid experiences an upward thrust which depends on _____.

1. 1. the weight of the fluid displaced by it
   2. the volume of the body
   3. the mass of the body
   4. None of the above

Which of the following is the lightest substance known?

1. 1. Hydrogen
   2. Oxygen
   3. Nitrogen
   4. Carbon

The chemical name of laughing gas is _____.

1. 1. Nitric oxide
   2. Nitrogen dioxide
   3. Nitrous oxide
   4. Nitrogen pentoxide

Wood is the main raw material for the manufacture of _____.

1. 1. Paper
   2. Paint
   3. Ink
   4. Gun Powder