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MCQs

Total Questions : 273 | Page 8 of 28 pages
Question 71. When two aqueous solutions react together to give off solid product, this reaction is known as
  1.    precipitation reaction
  2.    oxidation
  3.    reduction
  4.    redox reaction
 Discuss Question
Answer: Option A. -> precipitation reaction
Answer: (a).precipitation reaction
Question 72. The name given to ions containing oxygen (O₂) are usually called
  1.    oxalates
  2.    oxides
  3.    ates
  4.    oxy
 Discuss Question
Answer: Option C. -> ates
Answer: (c).ates
Question 73. Sulfuric acid is synthesized by the process of
  1.    Haber
  2.    contact
  3.    electrolysis
  4.    hydrolysis
 Discuss Question
Answer: Option B. -> contact
Answer: (b).contact
Question 74. The number of electrons (e⁻) which are needed to complete the outer shell of each atom determines formula of
  1.    covalent compound
  2.    ionic compound
  3.    co-ordinate compound
  4.    metallic compound
 Discuss Question
Answer: Option A. -> covalent compound
Answer: (a).covalent compound
Question 75. Equilibrium reactions are found in large scale in the production of
  1.    ammonia only
  2.    sulfuric acid only
  3.    lactic acid
  4.    ammonia and sulfuric acid
 Discuss Question
Answer: Option D. -> ammonia and sulfuric acid
Answer: (d).ammonia and sulfuric acid
Question 76. Major portion of mixture of hydrocarbons like crude oil is composed of
  1.    ester
  2.    alcohol
  3.    alkanes
  4.    propane
 Discuss Question
Answer: Option C. -> alkanes
Answer: (c).alkanes
Question 77. Hydrocarbons contain
  1.    carbon only
  2.    hydrogen only
  3.    oxygen
  4.    carbon and hydrogen
 Discuss Question
Answer: Option D. -> carbon and hydrogen
Answer: (d).carbon and hydrogen
Question 78. The main important source of hydrocarbons is
  1.    petrol
  2.    crude oil
  3.    copper
  4.    petroleum
 Discuss Question
Answer: Option B. -> crude oil
Answer: (b).crude oil
Question 79. The general formula for alkanes is
  1.    CₙH₂ₙ
  2.    CₙH₂ₙ₊₂
  3.    CₙH
  4.    CH₂ₙ
 Discuss Question
Answer: Option A. -> CₙH₂ₙ
Answer: (a).CₙH₂ₙ
Question 80. The maximum number of hydrogen atoms are present in molecules of alkanes hence they are
  1.    saturated hydrocarbons
  2.    unsaturated hydrocarbons
  3.    super saturated hydrocarbons
  4.    super unsaturated hydrocarbon
 Discuss Question
Answer: Option A. -> saturated hydrocarbons
Answer: (a).saturated hydrocarbons

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