Discussion
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- Question
Whcih one is the compound in the following
Options- A. mercury
- B. ozone
- C. air
- D. ammonia
- Correct Answer
- air
- 1. Air is
Options- A. compound
- B. element
- C. mixture
- D. solution Discuss
- 2. The substances that are composed of to or more different elements in fixed proportion by mass are called
Options- A. mixture
- B. compound
- C. element
- D. None of these Discuss
- 3. A Radioactive subatance emits
Options- A. alpha particles
- B. beta particle
- C. gamma particle
- D. all of the three Discuss
- 4. What temperature is considered freezing? Discuss
- 5. Why does carbon tetrachloride have no dipole moment?
Options- A. Because of same size of carbon and chlorine atoms
- B. Because of regular tetrahedral structure
- C. Because of planar structure
- D. Because of similar electron affinities of carbon and chlorine Discuss
- 6. Which of the following is the mixture
Options- A. distilled water
- B. gasoline
- C. liquified petroleum gas
- D. both (b) & (c) Discuss
- 7. Washing soda is
Options- A. sodium hydroxide
- B. sodium carbonate
- C. sodium bicorbonate
- D. Potassium chloride Discuss
- 8. In the making of jewels, gold is usually mixed with
Options- A. zinc
- B. tin
- C. copper
- D. aluminium Discuss
- 9. Acute diabets patients smell of
Options- A. acetone
- B. ether
- C. ethyl alcohol
- D. methyl alcohol Discuss
- 10. Alum is used
Options- A. as an analgesic
- B. in the purification of water
- C. as a fertilizer
- D. as a disinfectant Discuss
Chemistry problems
Search Results
Correct Answer: mixture
Correct Answer: compound
Correct Answer: all of the three
Correct Answer: We have all been taught that water freezes at 32 degrees Fahrenheit, 0 degrees Celsius, 27315 Kelvin That's not always the case, though Scientists have found liquid water as cold as -40 degrees F in clouds and even cooled water down to -42 degrees F in the lab
Correct Answer: Because of regular tetrahedral structure
Correct Answer: both (b) & (c)
Correct Answer: sodium carbonate
Explanation:
Sodium hydroxide - NaOH is caustic soda
Sodium carbonate - Na2CO3 is washing soda
Sodium bicarbonate - NaHCO3 is baking soda
Correct Answer: copper
Explanation:
In making jewels, gold is usually mixed with copper to make it little hard.
Correct Answer: acetone
Explanation:
Acute diabetes results in the formation of acetone in the body. Hence such patients smell of acetone.
Correct Answer: in the purification of water
Explanation:
Alum is a common alum, potassium aluminum sulphate which makes colloidally suspended impurities in water such as clay to settle down.
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