What does the term Dolby B or Dolby C printed on tape recorders and other sound systems refer to?

• frequency modulated system
• amplitude modulated system
• noise reduction circuit
• both DC and AC power can be used
Correct Option: C  [ noise reduction circuit ]

Remark:

Sodium stearate is a salt and is used?

• in gunpowder
• in Paint
• to make Soap
• to make fertilizer
Correct Option: C  [ to make Soap ]

Remark:

Which of the following pairs is incorrect ?

(A) Roentgen : X-ray

(B) Newton : Law of gravitation

(C) Faraday : Diffusion of gases

(D) Pasteur : Bacteriology

• Roentgen : X-ray
• Newton : Law of gravitation
• Faraday : Diffusion of gases
• Pasteur : Bacteriology
Correct Option: C  [ Faraday : Diffusion of gases ]

Remark:

All biological reaction in a living organism come under

• Anabolism
• Catabolism
• Metabolism
• Metamorphosis
Correct Option: C  [ Metabolism ]

Remark: "Metabolism" involves two main categories of reactions:
1.Catabolism: This is the breakdown of larger molecules into smaller ones.

2. Anabolism: This is the synthesis of larger molecules from smaller ones.

Our bones and teeth are generally made of

• Tricalcium phosphate
• Fluoropetite
• Chloropetite
• Hydrolith
Correct Option: A  [ Tricalcium phosphate ]

Remark:

What is reason for using red light as a stop signal ?

• Long wavelength
• Short wavelength
• Chromogenic effect
• Infra Red
Correct Option: A  [ Long wavelength ]

Remark:

Bronze is an alloy of:

• Copper and Zinc
• Tin and Zinc
• Copper and Tin
• Iron and Zine
Correct Option: C  [ Copper and Tin ]

Remark:

Number of spinal nerves in human are:

• 11 pairs
• 27 pairs
• 32 pairs
• 31 pairs
Correct Option: D  [ 31 pairs ]

Remark:

The highest tides occur at the time of the new moon and the:

• full moon
• solar eclipse
• lunar eclipse
• volcanoes
Correct Option: A  [ full moon ]

Remark:

Cerebral Malaria is caused by:

• Plasmodium vivax
• Plasmodium malariae
• Plasmodium falciparum
• None of the above
Correct Option: C  [ Plasmodium falciparum ]

Remark: