Chemistry In Everyday Life

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Question
CBSEENCH12010699

Aspirin is known as

  • acetyl salicylic acid

  • phenyl salicylate

  • acetyl salicylate

  • methyl salicylic acid

Solution

A.

acetyl salicylic acid

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Question
CBSEENCH12010947

Identify the correct statements regarding enzymes

  • Enzymes are specific biological catalysts that can normally function at very high temperature (T ~ 1000 K)

  • Enzymes are specific biological catalysts that the posses well – defined active sites

  • Enzymes are specific biological catalysts that can not be poisoned

  • Enzymes are normally heterogeneous catalysts that are very specific in their action

Solution

B.

Enzymes are specific biological catalysts that the posses well – defined active sites

Question
CBSEENCH12010624

Thiol group is present in:

  • Cystine

  • Cysteine

  • Methionine

  • Cytosine

Solution

B.

Cysteine

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Thiol group (SH) is present in cysteine.

Question
CBSEENCH12010648

Which of the following compound is not an antacid?

  • Aluminium hydroxide

  • Cimetidine

  • Phenelzine

  • Ranitidine

Solution

C.

Phenelzine

Question
CBSEENCH12010615

Which of the following is an anionic detergent?

  • Sodium lauryl sulphate

  • Cetyltrimethyl ammonium bromide

  • Glyceryl oleate

  • Sodium stearate

Solution

A.

Sodium lauryl sulphate

Sodium lauryl sulphate 
[CH3(CH2)10CH2OSO3-Na+)]

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= Cationic detergent
Glyceryl oleate [(C17H32COO)3C3H6] = Non-ionic detergent Sodium stearate [C17H35COO-Na+] = Anionic soap

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