MCQs4All - Chemistry Collection

Chemistry MCQs for NTS, FPSC, CSS, PPSC, PMS, UTS, FTS, OTS, Teaching, CT, PTC, SST, B.Ed, M.Ed of past papers

Question. Secondary cell is_____________________?
  1. rechargeable
  2. non rechargeable
  3. electrolytic cell
  4. Daniel cell
Question. A reaction has values of ?H and ?S which are both positive. The reaction __________________?
  1. Is spontaneous
  2. Spontaneity is temperature dependent
  3. Has an increasing free energy
  4. Is non-spontaneous
Question. In how many forms do matter exists ?
  1. Three
  2. Four
  3. Five
  4. Two
Question. Nitration of chlorobenzene gives___________________?
  1. o – chloronitrobenzene
  2. p – chloronitrobenzene
  3. m – chloronitrobenzene
  4. A & B
Question. Linds method is employed for__________________?
  1. Separation of gases
  2. Expansion of gases
  3. Compression of gases
  4. Liquefaction of gases
Question. Splitting of spectral lines when atom is subjected to magnetic field is called _______________?
  1. Zeemans effect
  2. Starks effect
  3. Photo electric effect
  4. Compton effect
Question. Which of the following gases is the main cause of acid rain ?
  1. CO
  2. NO2
  3. both a & b
  4. none of the above
Question. Which one is true about isotope ?
  1. Same number of neutrons
  2. Same mass number
  3. Same physical properties
  4. Same chemical properties
Question. The gases become non-ideal at ________________?
  1. High temperature and high pressure
  2. Low temperature and low pressure
  3. High temperature and low pressure
  4. Low temperature and high pressure
Question. The nitrogenous base different in RNA as compared to DNA is_________________?
  1. Cytosine
  2. Thymine
  3. Adenine
  4. Guanine
Question. Carboxylic acid on reduction with HI / phosphorous yields_________________?
  1. alkane
  2. alcohols
  3. aldehydes
  4. ketones
Question. Molecular mass of water (18g) means__________________?
  1. 1-mole molecules of water
  2. 1-gram molecule of water
  3. 3-gram atoms
  4. all
Question. Which of the following is the weakest reducing agent ?
  1. HF
  2. HBr
  3. HC
  4. HI