Which of the following is not a property of heavy water ?

• Boiling point of heavy water is lower than that of ordinary water
• density of heavy water is higher than that of ordinary water
• freezing point of heavy water is higher than that ordinary water
• it produces corrosion

Which one of the following is called the 'power house' of the cell ?

• Golgi body
• Mitochondrion
• Ribosome
• Lysosome

Plasma membrane in eukaryotic cells is made up of:

• Phospholipid
• Lipoprotein
• Phospholipo-protein
• Phospho-protein

One of the constitutes of tear gas is:

• Ethane
• Ethanol
• Ether
• Chloropicrin

A vitamin requires cobalt for its activity. The vitamin is:

• Vitamin B₁₂
• vitamin D
• vitamin B₂
• Vitamin A

What is deposited on iron in the process of galvanisation?

• Copper
• Zinc
• Tin
• Aluminium

Which of the following metals is the most ductile metal?

• Gold
• Aluminium
• Copper
• Tin

An instrument used for measuring depth of an ocean is called?

• Hydrometer
• Hygrometer
• Fathometer
• Galvanometer

The SI unit of temperature is

• Temperature
• Ampere
• Watt
• Kelvin

When pressure is increased, then the melting point of ice:

• Increases
• Decreases
• Remains unchanged
• Depends on the impurities in the ice