Discussion
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- Question
Which one is the pure element
Options- A. glass
- B. cement
- C. sodium
- D. None of these
- Correct Answer
- sodium
- 1. The isotopes of chlorine with mass number 35 and 37 exist in the ratio of
Options- A. 1:2
- B. 2:3
- C. 3:1
- D. 3:4 Discuss
- 2. A radioactive substance has a half life of four months, three-fourth of the substance would decay in
Options- A. 3 months
- B. 4 months
- C. 8 months
- D. 12 months Discuss
- 3. Among the following the maximum covalent character is shown by the compound (1) MgCl2 (2) FeCl2 (3) SnCl2 (4) AlCl3
Options- A. Option 1
- B. Option 2
- C. Option 3
- D. Option 4 Discuss
- 4. Which one is not metal
Options- A. sulpher
- B. sugar
- C. nitogen
- D. all of these Discuss
- 5. The enzyme that converts glucose to ethyl alcohol is
Options- A. Maltase
- B. Zymase
- C. Diastase
- D. Invertase Discuss
- 6. A mixture of sand and naphthalene can be separated by
Options- A. Fractional distillation
- B. Sublimation
- C. Chromatography
- D. Any of them Discuss
- 7. SI unit of equivalent conductance
Options- A. ohm/cm
- B. Siemens m2/equivalent
- C. Siemens/equivalent
- D. mho/cm Discuss
- 8. The discovery of neutron became very late because
Options- A. it is present in nucleus
- B. it is a fundamental particle
- C. it does not move
- D. it does not carry any charge Discuss
- 9. Which one of the following mixture is homogeneous
Options- A. starch and sugar
- B. methanol and water
- C. graphite and charcoal
- D. calcium carbonate and calcium bicarbonate Discuss
- 10. Which one of the following substances does not have a melting point
Options- A. bromine
- B. sodium chloride
- C. mercury
- D. glass Discuss
Chemistry problems
Search Results
Correct Answer: 3:1
Correct Answer: 8 months
Correct Answer: Option 4
Explanation:
According to Fajans rule, cation with greater charge and smaller size favours covalency.
Correct Answer: all of these
Correct Answer: Zymase
Correct Answer: Sublimation
Correct Answer: Siemens m2/equivalent
Correct Answer: it does not carry any charge
Correct Answer: methanol and water
Correct Answer: glass
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