Who invented the contact lens?

• Enrico Fermi
• Adolf Gaston Eugen Fick
• Sandford Fleming
• Benoit Fourneyron
Correct Option: B  [ Adolf Gaston Eugen Fick ]

Remark:

What is the temperature when density of water is the highest

• 5 degree Celsius
• 6 degree Celsius
• 4 degree Celsius
• 3 degree Celsius
Correct Option: C  [ 4 Degree Celsius ]

Remark:

The SI unit of temperature is

• Temperature
• Ampere
• Watt
• Kelvin
Correct Option: D  [ Kelvin ]

Remark:

Liquid natural gas (LNG) predominantly contains _______ in liquid form.

• Ethane
• Ethylene
• Methane
• Methylene
Correct Option: C  [ Methane ]

Remark:

Volumetric method for determination of fat % of milk is:

• Waste fall balance
• Soxhlet method
• Richmond sliding method
• Garber method
Correct Option: D  [ Garber method ]

Remark:

In medical terminology, USG stands for:

• Undersized gland
• Ultrasonography
• Unsegmented gonads
• None of the above
Correct Option: B  [ Ultrasonography ]

Remark:

Which of the following statements is not correct ?

• Rh⁺ person can donate blood to Rh⁺ person
• Rh^- person can donate blood to Rh^- person
• Rh^- person can donate blood to Rh⁺ person
• Rh⁺ person can donate blood to Rh^- person
Correct Option: D  [ Rh⁺ person can donate blood to Rh^- person ]

Remark:

Curie point is the temperature at which:

• matter becomes radioactive
• a metal loses magnetic properties
• a metal loses conductivity
• transmutation of metal occurs
Correct Option: B  [ a metal loses magnetic properties ]

Remark:

Which of the following is an Inert Gas?

• Hydrogen
• Nitrogen
• Oxygen
• Argon
Correct Option: D  [ Argon ]

Remark:

Which one of the following is a chemical change ?

• Burning of candle
• Melting of wax
• Vapourisation of water
• Magnetising of Iron
Correct Option: A  [ Burning of candle ]

Remark: