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1 Inorganic Chemistry MCQs

The chemical symbol for silver is ?

  • Au
  • Ag
  • Sv
  • At
0 Comments
Correct Answer: B. Ag

Explanation:

The chemical symbol for silver is Ag. This symbol comes from the Latin ... Read More Details

2 Inorganic Chemistry MCQs

The only non-metal that exists in liquid state is ?

  • Chlorine
  • Iodine
  • Bromine
  • Fluorine
0 Comments
Correct Answer: C. Bromine

Explanation:

Non-metals are generally gases (like oxygen, nitrogen, chlorine) or solids (like sulfur, iodine, ... Read More Details

3 Inorganic Chemistry MCQs

Z number for chlorine is ?

  • 17
  • 35
  • 18
  • 16
0 Comments
Correct Answer: A. 17

Explanation:

The Z number of an element represents its atomic number, which is defined ... Read More Details

4 Physical Chemistry MCQs

Law of mass action was proposed by Goldberg and Peter Waage in ?

  • 1819
  • 1864
  • 1882
  • 1905
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Correct Answer: B. 1864

Explanation:

The Law of Mass Action is one of the most important principles in ... Read More Details

5 Inorganic Chemistry MCQs

The product of the reaction between steam and a hydrocarbon in the presence of a nickel (Ni) catalyst at 900°C is ?

  • CO₂ + O₂
  • CO + H₂ (Water gas)
  • CO₃ + H₂O
  • Laughing Gas
0 Comments
Correct Answer: B. CO + H₂ (Water gas)

Explanation:

When a hydrocarbon reacts with steam in the presence of a nickel (Ni) ... Read More Details

6 Physical Chemistry MCQs

The decomposition of nitroglycerine is an example of:

  • Self-catalytic reaction
  • Enzyme-catalytic reaction
  • Autocatalytic reaction
  • Induced catalysis
0 Comments
Correct Answer: C. Autocatalytic reaction

Explanation:

The decomposition of nitroglycerine (C₃H₅N₃O₉) is a classic example of an autocatalytic reaction. ... Read More Details

7 Physical Chemistry MCQs

The phenomenon of negative catalysis is also known as:

  • Auto catalysis
  • Self catalysis
  • Inhibition
  • Enzyme catalysis
0 Comments
Correct Answer: C. Inhibition

Explanation:

In chemical kinetics, a catalyst is a substance that increases the speed of ... Read More Details

8 Physical Chemistry MCQs

Ostwald’s dilution law is applicable to:

  • All electrolytes
  • Strong electrolytes
  • Non-electrolytes
  • Weak electrolytes
0 Comments
Correct Answer: D. Weak electrolytes

Explanation:

Ostwald’s dilution law explains the relationship between the dissociation constant (Ka or Kb), ... Read More Details

9 Analytical Chemistry MCQs

The best indicator for titrating HCl with NH₄OH is?

  • Methyl orange
  • Litmus
  • Phenol red
  • Phenolphthalein
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Correct Answer: A. Methyl orange

Explanation:

In acid–base titration, the choice of indicator depends on the strength of the ... Read More Details

10 Physical Chemistry MCQs

Species that are formed in one step of a reaction mechanism and used up in another step are called:

  • Catalyst
  • Intermediate
  • Inhibitor
  • Activated complex
0 Comments
Correct Answer: B. Intermediate

Explanation:

In chemical kinetics, a reaction mechanism is the step-by-step sequence of elementary reactions ... Read More Details