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