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- Question
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
- Correct Answer
- it does not carry any charge
- 1. SI unit of equivalent conductance
Options- A. ohm/cm
- B. Siemens m2/equivalent
- C. Siemens/equivalent
- D. mho/cm Discuss
- 2. A mixture of sand and naphthalene can be separated by
Options- A. Fractional distillation
- B. Sublimation
- C. Chromatography
- D. Any of them Discuss
- 3. Which one is the pure element
Options- A. glass
- B. cement
- C. sodium
- D. None of these Discuss
- 4. 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
- 5. 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
- 6. 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
- 7. Which one of the following substances does not have a melting point
Options- A. bromine
- B. sodium chloride
- C. mercury
- D. glass Discuss
- 8. Sodium carbonate crystal lose water molecules this property is called
Options- A. hygroscopy
- B. deliquescence
- C. efflorescence
- D. None of these Discuss
- 9. The absolute value of charge on electron was determined by
Options- A. J.J.Thomson
- B. R.A. Millikan
- C. Rutherford
- D. Chadwick Discuss
- 10. Which one of the following elements is essential for construction is nuclear reactors
Options- A. Cobalt
- B. Nickel
- C. Zirconium
- D. Tungsten Discuss
Chemistry problems
Search Results
Correct Answer: Siemens m2/equivalent
Correct Answer: Sublimation
Correct Answer: sodium
Correct Answer: 3:1
Correct Answer: 8 months
Correct Answer: methanol and water
Correct Answer: glass
Correct Answer: efflorescence
Correct Answer: R.A. Millikan
Correct Answer: Zirconium
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