Discussion
Home ‣ General Knowledge ‣ Chemistry Comments
- Question
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
- Correct Answer
- 8 months
- 1. 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
- 2. Which one is not metal
Options- A. sulpher
- B. sugar
- C. nitogen
- D. all of these Discuss
- 3. The enzyme that converts glucose to ethyl alcohol is
Options- A. Maltase
- B. Zymase
- C. Diastase
- D. Invertase Discuss
- 4. The M.K.S. system was first introduced by
Options- A. archimedes
- B. Eienstein
- C. Newton
- D. Giorgi Discuss
- 5. Cobalt - 60 is commonly used in radiation therapy because it emits
Options- A. alpha - rays
- B. beta rays
- C. gamma rays
- D. X - rays Discuss
- 6. 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
- 7. Which one is the pure element
Options- A. glass
- B. cement
- C. sodium
- D. None of these Discuss
- 8. A mixture of sand and naphthalene can be separated by
Options- A. Fractional distillation
- B. Sublimation
- C. Chromatography
- D. Any of them Discuss
- 9. SI unit of equivalent conductance
Options- A. ohm/cm
- B. Siemens m2/equivalent
- C. Siemens/equivalent
- D. mho/cm Discuss
- 10. 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
Chemistry problems
Search Results
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: Giorgi
Correct Answer: gamma rays
Correct Answer: 3:1
Correct Answer: sodium
Correct Answer: Sublimation
Correct Answer: Siemens m2/equivalent
Correct Answer: it does not carry any charge
Comments
There are no comments.More in General Knowledge:
Programming
Copyright ©CuriousTab. All rights reserved.