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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Q:

Improve the bracketed part of the sentence.

Any bad habit must be nipped (on) the bud.

A) on	B) in
C) off	D) no improvement

Answer & Explanation Answer: B) in

Explanation:

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Q:

Which vehicle is spelled the same forwards and backwards?

Answer

Racecar and Civic are the two vehicles which spelled the same forwards an backwards.

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Q:

The fastest growing plant is ______ ?

A) Ashoka	B) Banyan
C) Eucalyptus	D) Rose

Answer & Explanation Answer: C) Eucalyptus

Explanation:

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Q:

K-9 Journal, which was recently released, is associated with which field?

A) Pandemic	B) Robotics
C) Medicine	D) Policing

Answer & Explanation Answer: D) Policing

Explanation:

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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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Q:

Which of the following has highest penetration power?

A) α– radiations	B) β– radiations
C) γ– radiations	D) All have same penetration power.

Answer & Explanation Answer: C) γ– radiations

Explanation:

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Q:

Which one of the following animals was not represented on the terracotta art of the Harappan culture

A) Cow	B) Elephant
C) Rhinoceros	D) Tiger

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