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MCQs

Total Questions : 273 | Page 24 of 28 pages
Question 231. In KHCO₃, element with highest atomic mass is
  1.    Oxygen
  2.    Hydrogen
  3.    Potassium
  4.    Carbon
 Discuss Question
Answer: Option C. -> Potassium
Answer: (c).Potassium
Question 232. The ions which are composed of more than one type of atom are called
  1.    ionic compounds
  2.    covalent compounds
  3.    compound ions
  4.    ionic ions
 Discuss Question
Answer: Option C. -> compound ions
Answer: (c).compound ions
Question 233. During a chemical reaction, atoms can not be
  1.    created only
  2.    destroyed only
  3.    converted
  4.    created and destroyed
 Discuss Question
Answer: Option D. -> created and destroyed
Answer: (d).created and destroyed
Question 234. Haber process is carried out to synthesize
  1.    ammonia
  2.    sulfuric acid
  3.    hydrochloric acid
  4.    nitrous acid
 Discuss Question
Answer: Option A. -> ammonia
Answer: (a).ammonia
Question 235. The molecules of alcohol have
  1.    hydrogen bonding
  2.    dipole forces
  3.    Van der Waals's forces
  4.    covalent bonding
 Discuss Question
Answer: Option A. -> hydrogen bonding
Answer: (a).hydrogen bonding
Question 236. 2 methyl-2 propan-2-ol is an example of
  1.    primary alcohol
  2.    secondary alcohol
  3.    tertiary alcohol
  4.    quaternary alcohol
 Discuss Question
Answer: Option C. -> tertiary alcohol
Answer: (c).tertiary alcohol
Question 237. The organic molecules containing hydroxyl group are called
  1.    esters
  2.    alcohols
  3.    aldehydes
  4.    ethane
 Discuss Question
Answer: Option B. -> alcohols
Answer: (b).alcohols
Question 238. The general formula for alcohols is
  1.    CₙH₂ₙ
  2.    CₙH₂ₙ₊₁
  3.    CₙH
  4.    CH₃
 Discuss Question
Answer: Option B. -> CₙH₂ₙ₊₁
Answer: (b).CₙH₂ₙ₊₁
Question 239. Organic molecules with similar relative molecular mass have alcohols (CₙH₂ₙ₊₁OH) bearing high
  1.    boiling point
  2.    polarity
  3.    volatility
  4.    Sublimation point
 Discuss Question
Answer: Option A. -> boiling point
Answer: (a).boiling point
Question 240. Alcohol (CₙH₂ₙ₊₁OH) with lowest molecular mass at room temperature is
  1.    solid
  2.    liquid
  3.    gas
  4.    vapor
 Discuss Question
Answer: Option B. -> liquid
Answer: (b).liquid

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