Chemistry Questions

Q:

Which kind of energy is stored in a chemical bond?

A) Potential energy B) Kinetic energy
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) Potential energy

Explanation:
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Q:

Which of these is ATP?

A) 3 Phosphate groups attached to chromosome attached to Adenine B) 3 Phosphate groups attached to a Ribose attached to Adenine
C) 3 Phosphate groups attached to a Ribose attached to Thymine D) None of the above
 
Answer & Explanation Answer: B) 3 Phosphate groups attached to a Ribose attached to Adenine

Explanation:

ATP is a Adenosine Triphosphate.

 

ATP is 3 Phosphate groups attached to a Ribose attached to Adenine.

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Q:

Compounds are formed as a result of chemica change.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

TRUE, the compounds are formed as a result of chemical change.

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Q:

The relationship between a cathode and an anode involves

A) Electrons B) Neutrons
C) Protons D) Diodes
 
Answer & Explanation Answer: A) Electrons

Explanation:

The relationship between a cathode and an anode involves the transfer of electric charge between them. The cathode is the negative terminal on the battery, which has zero electric potential. The anode is the positive terminal on the battery and has the battery's maximum electric potential. Current flows from the battery's anode (positive terminal) to the cathode (negative terminal). In electron flow, electrons leave the negative side of the battery and move towards the positive side of the battery.

 

Hence, The relationship between a cathode and an anode involves Electrons.

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Q:

Which has the lowest freezing point?

A) Mercury B) Helium
C) Cesium D) Aluminium
 
Answer & Explanation Answer: B) Helium

Explanation:

Helium has the lowest freezing point of all the elements. When coming to metals, mercury has the lowest freezing point of all the metals.

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Q:

The reactivity of an atom arises from

A) the existence of unpaired electrons in the valence shell B) the potential energy of the valence shell
C) the average distance of the outermost electron shell from the nucleus D) the sum of the potential energies of all the electron shells
 
Answer & Explanation Answer: A) the existence of unpaired electrons in the valence shell

Explanation:

The reactivity of an atom arises from the existence of unpaired electrons in the valence shell.

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Q:

Which chemical bond most likely stores the most energy?

A) Single bond B) Double bond
C) Both A & B D) None of the above
 
Answer & Explanation Answer: B) Double bond

Explanation:
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Q:

Which gas is not produced by volcanic eruptions?

A) Methane B) carbon dioxide
C) sulfur dioxide D) hydrochloric acid
 
Answer & Explanation Answer: A) Methane

Explanation:

Many toxic gases along with water vapour are emitted in vocanic eruptions. All such toxic gases include hydrochloric acid, sulfur dioxide, carbon dioxide, hydrogen sulfide and carbon monoxide. Methane is not produced in the volcanic eruptions.

which_gas_is_not_produced_by_volcanic_eruptions1559201445.jpg image

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