Q:

__________ networks are connected by telephones, underwater cables and satellites.

A) Typewriter	B) DVD
C) Computers	D) Washing Machine

Answer & Explanation Answer: C) Computers

Explanation:

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Q:

When water freezes its density

A) decreases	B) remains constant
C) increases	D) become zero

Answer & Explanation Answer: A) decreases

Explanation:

When water freezes its density decreases.

Water at ordinary temperatures contracts and increases in density as it is cooled, like most substances. But at about 4°C it reaches a maximum density and then decreases in density as it approaches the freezing point.

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Q:

18 H on GC?

Answer

The given letters equation states that

18 H on a GC means 18 Holes on a Golf Course.

18_H_on_a_GC1585548612.jpg image

Workspace

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Q:

How many quarters in a football game?

how many quarters in a football game

A) 2	B) 3
C) 4	D) 0

Answer & Explanation Answer: C) 4

Explanation:

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Q:

Which of the statements given below are correct?

A) Indian Grandmaster won the 2017 Chess World Cup.

B) In 2017, Roberto Firmino played for the Premier League team Leicester City

C) In 2018 IPL auctions, Rajasthan Royals retained MS Dhoni.

A) Only A	B) Only B
C) Only C	D) None

Answer & Explanation Answer: D) None

Explanation:

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Q:

Tikka disease is related with the crop:

A) Musturd	B) Paddy
C) Ground nut	D) All of these

Answer & Explanation Answer: C) Ground nut

Explanation:

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Q:

Which of the following is an Autotroph?

A) Fish	B) Algae
C) Butterfly	D) Mushroom

Answer & Explanation Answer: B) Algae

Explanation:

Here from the above options, Algae is an Autotroph.

Autotrophs :

An Autotroph is also called as Producer, is an organism that produces complex organic compounds from simple substances present in its surroundings, generally using energy from light or inorganic chemical reactions.

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Q:

The reduction potential of hydrogen half-cell will be negative if :
(1) $P (H_{2})$ = 2 atm and [H+] = 2.0 M
(2) $P (H_{2})$ = 1 atm and [H+] = 2.0 M
(3) $P (H_{2})$ = 1 atm and [H+] = 1.0 M
(4) $P (H_{2})$ = 2 atm and [H+] = 1.0 M

A) Option 1	B) Option 2
C) Option 3	D) Option 4

Answer & Explanation Answer: D) Option 4

Explanation:

$H^{+} - e^{-} \to \frac{1}{2} H_{2}$

Apply Nernst equation

$E = 0 - \frac{0.059}{1} \log (\frac{P H_{2}^{\frac{1}{2}}}{[H^{+}]})$

$E = - \frac{0.059}{1} \log (\frac{2^{\frac{1}{2}}}{1})$

Therefore E is Negative

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