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Nursing Question Bank

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1265 available questions

Chemistry · Question 841

Which element does not react with dilute HCl?

  1. Calcium
  2. Carbon
  3. Sodium
  4. Potassium
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Correct answer: B

Carbon

Carbon is the answer marked in the supplied practice source.

Chemistry · Question 842

Why do metals lose electrons easily?

  1. They are more electropositive
  2. They have high electron affinity
  3. They are more electronegative
  4. They are not good conductors of electricity
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Correct answer: A

They are more electropositive

They are more electropositive is the answer marked in the supplied practice source.

Chemistry · Question 843

What is the valence shell electronic configuration of alkali metals?

  1. ns²np¹
  2. ns²
  3. ns²np⁶
  4. ns¹
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Correct answer: D

ns¹

ns¹ is the answer marked in the supplied practice source.

Chemistry · Question 844

Which element is less malleable?

  1. Sodium
  2. Iron
  3. Silver
  4. Gold
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Correct answer: A

Sodium

Sodium is the answer marked in the supplied practice source.

Chemistry · Question 845

How many elements is the human body composed of?

  1. 25
  2. 27
  3. 28
  4. 26
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Correct answer: D

26

26 is the answer marked in the supplied practice source.

Chemistry · Question 846

Metals can form ions carrying charges:

  1. Uni-positive
  2. All of these
  3. Di-positive
  4. Tri-positive
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Correct answer: B

All of these

All of these is the answer marked in the supplied practice source.

Chemistry · Question 847

What percentage of Cu is present in sterling silver?

  1. 6.5
  2. 7.8
  3. 7.4
  4. 7.5
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Correct answer: D

7.5

7.5 is the answer marked in the supplied practice source.

Chemistry · Question 848

Which gas is produced at the cathode?

  1. H₂
  2. O₂
  3. O₃
  4. Cl₂
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Correct answer: A

H₂

H₂ is the answer marked in the supplied practice source.

Chemistry · Question 849

Where is sodium collected in Down’s cell?

  1. At cathode
  2. At anode
  3. In solution
  4. On wires
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Correct answer: A

At cathode

At cathode is the answer marked in the supplied practice source.

Chemistry · Question 850

Which process is reduction?

  1. Addition of oxygen
  2. Removal of hydrogen
  3. Removal of oxygen
  4. Loss of electrons
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Correct answer: C

Removal of oxygen

Removal of oxygen is the answer marked in the supplied practice source.