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1 Inorganic Chemistry MCQs

Which of the following statements is false about transition metals?

  • They form complexes
  • They show variable valency
  • All transition metal compounds are paramagnetic
  • They form coloured ions
0 Comments
Correct Answer: C. All transition metal compounds are paramagnetic

Explanation:

Transition metals are elements found in the d-block of the periodic table. They ... Read More Details

2 Organic Chemistry MCQs

The by-product of the process of saponification is ___________?

  • Methanol
  • Glycol
  • Glycerol
  • Sodium hydroxide
0 Comments
Correct Answer: C. Glycerol

Explanation:

The process of saponification is the basic chemical reaction behind soap making. In ... Read More Details

3 Organic Chemistry MCQs

Polyethylene Glycols (PEGs) are used in the preparation of which type of detergents?

  • Cationic detergents
  • Anionic detergents
  • Non-ionic detergents
  • All of the above
0 Comments
Correct Answer: C. Non-ionic detergents

Explanation:

Detergents are classified into anionic, cationic, non-ionic, and amphoteric types depending on the ... Read More Details

4 Organic Chemistry MCQs

Which type of surfactants perform well over a wide range of water hardness and pH?

  • Anionic
  • Cationic
  • Nonionic
  • Neutral
0 Comments
Correct Answer: C. Nonionic

Explanation:

Surfactants are surface-active agents that reduce the surface tension of water and help ... Read More Details

5 Organic Chemistry MCQs

Commercial detergents mainly contain which of the following compounds?

  • RCOON
  • RONa
  • RSNa
  • R–OSO₃Na
0 Comments
Correct Answer: A. RCOON

Explanation:

Detergents are cleansing agents that work by reducing surface tension and emulsifying oils, ... Read More Details

6 Inorganic Chemistry MCQs

Which one of the following compounds is known as caustic potash?

  • NaOH
  • KOH
  • NaCl
  • NaBH₄
0 Comments
Correct Answer: B. KOH

Explanation:

Caustic potash is the common name for potassium hydroxide (KOH), a strong inorganic ... Read More Details

7 Organic Chemistry MCQs

In which of the following compounds is the carbon–carbon bond strength maximum?

  • CH₃–CH₃
  • CH₂=CH₂
  • Benzene
  • Cyclohexane
0 Comments
Correct Answer: A. CH₃–CH₃

Explanation:

The strength of a chemical bond depends on the bond order, orbital overlap, ... Read More Details

8 Organic Chemistry MCQs

Which of the following effects best explains why o-nitrophenol is insoluble in water?

  • Inductive effect
  • Resonance effect
  • Intramolecular hydrogen bonding
  • Isomeric effect
0 Comments
Correct Answer: C. Intramolecular hydrogen bonding

Explanation:

The solubility of organic compounds in water depends largely on their ability to ... Read More Details

9 Organic Chemistry MCQs

Which one of the following compounds is the most acidic?

  • Phenol
  • p-Nitrophenol
  • o-Nitrophenol
  • m-Nitrophenol
0 Comments
Correct Answer: B. p-Nitrophenol

Explanation:

The acidity of phenolic compounds depends on the ability of the molecule to ... Read More Details

10 Organic Chemistry MCQs

When chlorine (Cl) is attached to a benzene ring, it shows which effects?

  • +I and +R effect
  • –I and +R effect
  • +I and –R effect
  • –I and –R effect
0 Comments
Correct Answer: B. –I and +R effect

Explanation:

When a substituent such as chlorine (Cl) is attached to a benzene ring, ... Read More Details

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