The brain of any computer system is:

• Control Unit
• Monitor
• CPU
• ALU
Correct Option: C  [ CPU ]

Remark:

The element common to all acids is :

• Oxygen
• Hydrogen
• Nitrogen
• Sulphur
Correct Option: B  [ Hydrogen ]

Remark:

The waves which can propagate even through the vacuum,are called __________.

• Mechanical waves
• Reverse waves
• Inverted waves
• Electromagnetic waves
Correct Option: D  [ Electromagnetic waves ]

Remark:

What is the rarest element on earth?

• Radium
• Einsteinium
• Astatine
• none of these
Correct Option: C  [ Astatine ]

Remark: Astatine is a very rare radioactive chemical element with the chemical symbol At and atomic number 85

If a sample of soil is found to have a pH value of 8.25, it is:

• acidic
• neutral
• alkaline
• None of the above
Correct Option: C  [ alkaline ]

Remark:

Oxygen is transported to the cells of the human body through:

• Red Blood cells
• White Blood cells
• Hormones
• Enzymes
Correct Option: A  [ Red Blood cells ]

Remark:

Rainbow is formed due to a combination of:

• refraction and absorption
• dispersion and diffraction
• refraction and scattering
• dispersion and total internal re?ection
Correct Option: D  [ dispersion and total internal re?ection ]

Remark:

The age Of trees is determined by its

• height
• girth
• general appearance
• growth rings
Correct Option: D  [ growth rings ]

Remark:

Goverment of India had set up BEE, an autonomous Goverment Agency under Ministry of Power. BEE stands for:

• Bureau of Energy Efficiency
• Bureau of Electrical and Electronics
• Bureau of Enhanced Energy
• Bureau of Energy Emission
Correct Option: A  [ Bureau of Energy Efficiency ]

Remark:

Pituitary gland is located in

• brain
• kidney
• liver
• intestine
Correct Option: A  [ brain ]

Remark: