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 Chemistry Questions

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Q:

Ethane gas has a slightly ______ taste.

A) sweet B) bitter
C) sour D) salty
 
Answer & Explanation Answer: A) sweet

Explanation:
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Q:

What is a normal pH level in blood?

A) 7.35 - 7.45 B) 7.45 - 7.55
C) 7.6 - 7.7 D) 7 - 7.10
 
Answer & Explanation Answer: A) 7.35 - 7.45

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Q:

SO2 Polar or Nonpolar?

Answer

SO2 has a net dipole moment and has a bent shape in its structure as water molecule. Hence it is a polar molecule.

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2 2045
Q:

Which base is present in soap?

A) Sodium hydroxide B) Silicon dioxide
C) Calcium hydroxide D) Ammonium hydroxide
 
Answer & Explanation Answer: A) Sodium hydroxide

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Q:

Which compound is an electrolyte?

A) HCl B) NaCl
C) HBr D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

A substance that dissociates into ions in solution and acquires the capacity to conduct electricity. Sodium, potassium, chloride, calcium, and phosphate are examples of electrolytes, informally known as lytes.

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Q:

Which element is not a part of a nitrogenous base?

A) Carbon B) Oxygen
C) Phosphorous D) Nitrogen
 
Answer & Explanation Answer: C) Phosphorous

Explanation:

A nitrogenous base is an element that contains nitrogen that have same chemical properties of the base.

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Q:

Synthetic detergents are prepared from

A) potassium salts of higher fatty­acids B) sodium salts of higher fatty­acids
C) hydrocarbons of petroleum D) glycerides
 
Answer & Explanation Answer: C) hydrocarbons of petroleum

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Q:

During which change is energy absorbed?

A) Exothermic B) Endothermic
C) Both A & B D) Neither A nor B
 
Answer & Explanation Answer: B) Endothermic

Explanation:

Endothermic reaction is the reaction in which energy is obserbed for the change.

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