Discussion
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- Question
In arc welding, Argon is used because of its
Options- A. Low reactivity with metal
- B. Ability to lower the melting point of the metal
- C. High flammability
- D. High calorific value
- Correct Answer
- Low reactivity with metal
- 1. Name the gas used in preparation of bleaching powder
Options- A. Oxygen
- B. Hydrogen
- C. Nitrogen
- D. Chlorine Discuss
- 2. Magnesium is a constituent metal of __________
Options- A. Chlorophyll molecule
- B. DNA
- C. Mitochondria
- D. Ribosomes Discuss
- 3. Researchers at the University of Illinois have discovered new form of matter called Excitonium which was coined by ______ in the 1960?
Options- A. Bertrand Halperin
- B. Eugene Wigner
- C. Paul Dirac
- D. Felix Bloch Discuss
- 4. Which among the following is an example of mixture?
Options- A. Milk
- B. Gasoline
- C. Liquefied petroleum gas
- D. All options are correct Discuss
- 5. What is the number of groups and periods in the modern periodic table?
Options- A. 18, 7
- B. 18, 8
- C. 16, 7
- D. 16, 8 Discuss
- 6. Inert gases are
Options- A. Miscible with water
- B. Not stable
- C. Chemically unreactive
- D. Chemically very active Discuss
- 7. Chemical name of vinegar is
Options- A. Onam
- B. Pongal
- C. Bihu
- D. Hornbill Discuss
- 8. Which of the following is used as anaesthetics?
Options- A. N2
- B. N2O
- C. CH4
- D. CO2 Discuss
- 9. Which drug is used as a Nonsteroidal anti-inflammatory drug?
Options- A. Risedronate
- B. Diazepam
- C. Folic Acid
- D. Ibuprofen Discuss
- 10. The modern periodic table consists of 18 groups and 7 periods. What is the atomic number of the element placed in the 1st group and the 4th period?
Options- A. 21
- B. 17
- C. 19
- D. 9 Discuss
Chemistry problems
Search Results
Correct Answer: Chlorine
Correct Answer: Chlorophyll molecule
Correct Answer: Bertrand Halperin
Correct Answer: All options are correct
Correct Answer: 18, 7
Correct Answer: Chemically unreactive
Correct Answer: Pongal
Correct Answer: N2O
Correct Answer: Ibuprofen
Correct Answer: 19
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