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:

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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Q:

In archery, what shape is the target

A) Squar	B) Round
C) Triangular	D) Rectangular

Answer & Explanation Answer: B) Round

Explanation:

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Filed Under: Sports

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Q:

Who among the following was the first Indian to receive the Templeton Award?

A) Baba amte	B) Mother teresa
C) Dr. S. Radhakrishnan	D) Vinoba bhave

Answer & Explanation Answer: C) Dr. S. Radhakrishnan

Explanation:

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Filed Under: Honours and Awards

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Q:

The first-ever National Road Safety Month was observed in which year, in India?

A) 2021	B) 2019
C) 2017	D) 2015

Answer & Explanation Answer: A) 2021

Explanation:

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Filed Under: General Awareness
Exam Prep: Bank Exams

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Q:

Improve the bracketed part of the sentence.

The naughty boy made (many a mischief).

A) much mischief	B) many mischief
C) many a mischiefs	D) no improvement

Answer & Explanation Answer: A) much mischief

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

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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:

Who is the first female pilot to be inducted into the Indian Navy in 2017?

A) Tessy Thomas	B) Zaira Wasim
C) Shubhangi Swaroop	D) Dipa Karmakar

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