Q:

Microwave communication uses high-frequency.

A) TRUE

B) FALSE

Answer & Explanation Answer: A) TRUE

Explanation:

Microwaves are high-frequency signals in the 300 MHz to 300 GHz range. This is in contrast to radio signals, which are typically broadcast in all directions. Radio signals operate in the 3 Hz to 300 MHz range.

Microwave signals are used for both satellite and ground-based communications.

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Subject: Physics
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5 6196

Q:

The main constituent of biogas is

A) Butane	B) Methane
C) Hydrogen Sulphide	D) Carbondioxide

Answer & Explanation Answer: B) Methane

Explanation:

The main constituent of biogas is methane (55-70%), CO2 (30-45%) and some traces of gases such as H2S and ammonia.

Biogas is produced under anaerobic conditions; the process is denominated as anaerobic digestion.

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Filed Under: Chemistry
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Q:

Water has maximum density at............

A) 0 C	B) -15 C
C) 4 C	D) 15 C

Answer & Explanation Answer: C) 4 C

Explanation:

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Filed Under: Physics

11 6194

Q:

Heavy water is

A) PH7	B) rain water
C) deuterium oxide	D) tritium oxide

Answer & Explanation Answer: C) deuterium oxide

Explanation:

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Filed Under: General Science

22 6193

Q:

DRDO full form is

A) Delhi Research and Development Organisation	B) Defence Research and Deployment
C) Delhi Rail Development Organisation	D) Defence Research and Development Organisation

Answer & Explanation Answer: D) Defence Research and Development Organisation

Explanation:

DRDO stands for The Defence Research and Development Organisation.

The Defence Research and Development Organisation (DRDO) is an agency of the Republic of India, charged with the military's research and development, headquartered in New Delhi, India.

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Filed Under: General Awareness
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Q:

Fish and other aquatic creatures can live inside a deep frozen pond because

A) fish are cold-blooded animals	B) ice is a bad conductor of heat
C) there will always be water just beneath the ice level	D) they can adapt themselves to live in ice

Answer & Explanation Answer: C) there will always be water just beneath the ice level

Explanation:

Water has the maximum density at $4^{o} C$ . So at this temperature, it sinks down to bottom and stays here. If it cools further, it will become less dense and move up. So while the upper layers can cool enough to form ice, the bottom layers remain as water at $4^{o} C$ .

Therefore, (C) is correct.

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Filed Under: Physics
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Q:

The agricultural price support program is an example of ___________.

A) a price ceiling	B) a price floor
C) equilibrium pricing	D) No option is correct

Answer & Explanation Answer: B) a price floor

Explanation:

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Filed Under: Indian Economy
Exam Prep: Bank Exams

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Q:

Which of the statements given below are correct?

1. The author of the novel 'A Head Full of Ghosts' is M.R Carey.
2. The author of the novel 'The Cartel' is Don Winslow.
3. The author of the novel 'Dodgers' is Bill Beverly.

A) 1 and 2	B) 2 and 3
C) 1 and 3	D) 1, 2 and 3

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