Chemistry Practice Question and Answer
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Q: Identify a conjugate pair in the equation:
NH3 + H2O ⇌ NH4+ + OH–.
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63c7c0321e8e3f3e1a35f224NH3 + H2O ⇌ NH4+ + OH–.
- 1Ammonia and waterfalse
- 2Water and hydroxide iontrue
- 3Ammonium ion and hydroxide ion.false
- 4Ammonia and hydroxide ionfalse
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Answer : 2. "Water and hydroxide ion"
Q: Which of the following substances cannot act as both acid as well as a base?
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63c7b87a7efeed32fc1cb907- 1Amphoteric substancefalse
- 2Amphiprotic substancefalse
- 3Ampholytefalse
- 4Photophilictrue
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Answer : 4. "Photophilic"
Q: Which of the given metals cannot be extracted using smelting?
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62f10b533342ab11842d1eb2- 1Fefalse
- 2Altrue
- 3Znfalse
- 4Pbfalse
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Answer : 2. "Al "
Q:Read the following questions carefully and answer them.
“All the four quantum numbers of two electrons in an atom are not the same.” It is the law of —
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63aaa6fc5770eb565d4ff628- 1Hund’sfalse
- 2Exclusion Principle of Paulitrue
- 3Uncertainty Principle of Heisenbergfalse
- 4Avogadro’s Lawfalse
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Answer : 2. " Exclusion Principle of Pauli "
Q:Read the following questions carefully and answer them.
Which of the following is the main nitrogenous waste in humans ?
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63aaa8a35770eb565d50089c- 1Ammoniafalse
- 2Ureafalse
- 3Uric Acidtrue
- 4Ammonium Nitratefalse
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Answer : 3. "Uric Acid "
Q:Read the following questions carefully and answer them.
Curd is sour due to presence of
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63aaa987afa10611461dd172- 1Tartaric acidfalse
- 2Lactic acidtrue
- 3Acetic acidfalse
- 4Oxalic acidfalse
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Answer : 2. " Lactic acid "
Q: Plastic bottles are made of a polymer called PET. The expanded form of PET is
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6389c01134f83f1472741741- 1Polyethylene terephthalatetrue
- 2Polyethyl Terelenefalse
- 3Polyethylene triphosphatefalse
- 4Polyethyl tetrachloridefalse
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Answer : 1. "Polyethylene terephthalate"
Q: What is the bond between two amino acids in a protein called?
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6389b6699ebad6607b7f07fe- 1Ester bondfalse
- 2Glycosidic bondfalse
- 3Peptide bondtrue
- 4Phosphodiester bondfalse
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Answer : 3. "Peptide bond"
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