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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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Filed Under: Chemistry
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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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Filed Under: Chemistry
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Q:

Which of the following is not a sedimentary structure?

A) graded bedding B) rock color
C) ripple marks D) mudcracks
 
Answer & Explanation Answer: B) rock color

Explanation:

Except Rock color, all other Graded bedding, Ripple marks and Mud cracks are sedimentary structures.

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Filed Under: General Science
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Q:

The demand for labour is the same as the ___________.

 

A) marginal revenue product B) marginal physical product
C) marginal cost D) wage
 
Answer & Explanation Answer: A) marginal revenue product

Explanation:
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Filed Under: Indian Economy
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Q:

In the following question, choose the word opposite in meaning to the given word.

 

Elegance

A) vehemence B) fragrance
C) graceless D) ostentatious
 
Answer & Explanation Answer: C) graceless

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

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Q:

Improve the bracketed part of the sentence

Before I met your brother I (have had) a poor opinion of him.

A) had had B) had
C) did have D) no improvement
 
Answer & Explanation Answer: B) had

Explanation:
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Filed Under: English
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Q:

Visible and invisible items of debit and credit are the part of___________.

 

A) import-export policy B) balance of payment
C) balance of trade D) annual budget
 
Answer & Explanation Answer: B) balance of payment

Explanation:
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Filed Under: Indian Economy
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Q:

Improve the bracketed part of the sentence.

If the screen (was any brighter), it would have been easier to read from the tablet.

A) was bright enough B) was more brighter
C) had been brighter D) no improvement
 
Answer & Explanation Answer: C) had been brighter

Explanation:
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Filed Under: English
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