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- Question
Which among the following is an endothermic reaction?
Options- A. Respiration
- B. Combustion
- C. Sweating
- D. Burning of natural gas
- Correct Answer
- Sweating
- 1. How many atoms are present in a (NH4)2SO4 molecule?
Options- A. 15
- B. 14
- C. 13
- D. 12 Discuss
- 2. In Mendeleev's periodic table, the properties of the elements are considered a periodic function of their:
Options- A. Atomic mass
- B. Ionization enthalpy
- C. Atomic size
- D. Atomic number Discuss
- 3. Which gas is released when water is added to bleaching powder?
Options- A. Oxygen
- B. Hydrogen
- C. Carbon dioxide
- D. Chlorine Discuss
- 4. Atoms of same element having different mass numbers are called__________
Options- A. Isobars
- B. Isotopes
- C. Isotones
- D. Isomers Discuss
- 5. Decane has how many hydrogen atoms?
Options- A. 22
- B. 24
- C. 11
- D. 33 Discuss
- 6. Which of the following is not a component of Smog?
Options- A. Volatile organic compounds
- B. Nitrogen Oxide
- C. Sulphur dioxide
- D. Chlorine oxide Discuss
- 7. Which amongst the following is not a Cation?
Options- A. Aluminium ion
- B. Copper ion
- C. Sulphate ion
- D. Zinc ion Discuss
- 8. Which one of the following is a bad Thermal Conductor?
Options- A. Aluminium
- B. Copper
- C. Glass
- D. Silver Discuss
- 9. Release of which among the following is the primary reason for depletion of the ozone layer?
Options- A. Nitrous oxide
- B. Hydrogen dioxide
- C. Chlorofluro carbon
- D. Carbon monoxide Discuss
- 10. Which of the following molecules is joined by a double covalent bond?
Options- A. Cl2
- B. O2
- C. N2
- D. He2 Discuss
Chemistry problems
Search Results
Correct Answer: 15
Correct Answer: Atomic mass
Correct Answer: Chlorine
Correct Answer: Isotopes
Correct Answer: 22
Correct Answer: Chlorine oxide
Correct Answer: Sulphate ion
Correct Answer: Glass
Correct Answer: Chlorofluro carbon
Correct Answer: O2
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