Q:

Rearrange the parts of the sentence in correct order.

One will need to watch what

P-happens in the United States
Q-presidential elections
R-after the forthcoming

A) RPQ	B) QRP
C) PRQ	D) QPR

Answer & Explanation Answer: C) PRQ

Explanation:

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Q:

Which solution has the highest pH?

A) 50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq)	B) 50.0 mL 0.0500 M sodium hydroxide, NaOH (aq)
C) 50.0 mL 0.0500 M nitric acid, HNO3 (aq)	D) 50.0 mL 0.0500 M nitrous acid, HNO2 (aq)

Answer & Explanation Answer: A) 50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq)

Explanation:

50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq) has the highest pH value.

Sodium hydroxide and Calcium hydroxide are strong bases so they completely ionize in solution. Because they ionize at the same rate, and Calcium hydroxide has the higher pH calculated, then Calcium hydroxide, in fact, has the highest pH.

Nitric acid is a strong acid, so it completely ionizes in water. Whilst nitrous acid is a weak acid. Therefore, the nitric acid solution has the LOWEST ph.

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Q:

The oldest dynasty still ruling in which country ?

A) India	B) Iran
C) Japan	D) England

Answer & Explanation Answer: C) Japan

Explanation:

The longest-surviving dynasty in the world is the Imperial House of Japan.

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Q:

The main element used in the vulcanisation of rubber is

A) nickel	B) copper
C) sulphur	D) graphite

Answer & Explanation Answer: C) sulphur

Explanation:

In vulcanization, cruder rubber is heated with 3% sulphur at about for $120^{0} C$ for 2-3 hours.

Vulcanised rubber is a vastly improved product.

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Q:

Secondary storage ________

A) does not require constant power	B) does not use magnetic media
C) consists of four main types of devices	D) does not store information for later retrieval

Answer & Explanation Answer: A) does not require constant power

Explanation:

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Q:

Which of the statements given below are correct?

A) Rafael Nadal won the Tennis 2017 French Open Men's Singles.

B) In 2017, Valentino Rossi raced in MotoGP for Ducati.

C) In 2017, Marc Márquez raced in MotoGP for Honda.

A) Only A	B) Only B
C) Both A and C	D) A, B and C

Answer & Explanation Answer: C) Both A and C

Explanation:

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Q:

Which of the following is true about cloud computing?

A) Cloud computing has brought about a drop in hardware and software sales, while augmenting service revenues	B) You can access your data from any computer in the world, as long as you have an Internet connection.
C) Both A & B	D) It's always going to be less expensive and more secure than local computing.

Answer & Explanation Answer: C) Both A & B

Explanation:

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Q:

Which metal pollute the air of a big city?

A) Chromium	B) Lead
C) Copper	D) Zinc

Answer & Explanation Answer: B) Lead

Explanation:

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