Discussion
Home ‣ General Knowledge ‣ Chemistry Comments
- Question
In the making of jewels, gold is usually mixed with
Options- A. zinc
- B. tin
- C. copper
- D. aluminium
- Correct Answer
- copper
ExplanationIn making jewels, gold is usually mixed with copper to make it little hard.
- 1. Washing soda is
Options- A. sodium hydroxide
- B. sodium carbonate
- C. sodium bicorbonate
- D. Potassium chloride Discuss
- 2. Which of the following is the mixture
Options- A. distilled water
- B. gasoline
- C. liquified petroleum gas
- D. both (b) & (c) Discuss
- 3. Whcih one is the compound in the following
Options- A. mercury
- B. ozone
- C. air
- D. ammonia Discuss
- 4. Air is
Options- A. compound
- B. element
- C. mixture
- D. solution Discuss
- 5. 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
- 6. Acute diabets patients smell of
Options- A. acetone
- B. ether
- C. ethyl alcohol
- D. methyl alcohol Discuss
- 7. Alum is used
Options- A. as an analgesic
- B. in the purification of water
- C. as a fertilizer
- D. as a disinfectant Discuss
- 8. The soaps used in shaving cream are
Options- A. Calcium soaps
- B. lead soaps
- C. soft soaps
- D. hard soaps Discuss
- 9. Which is the Lightest of all the metals?
Options- A. Hydrogen
- B. Lithium
- C. Sodium
- D. Pottasium Discuss
- 10. One method by which the components of air can be seperated is
Options- A. shaking with caustic soda solution
- B. shaking with water
- C. fractional distillation of liquid air
- D. passing air over heated magnesium Discuss
Chemistry problems
Search Results
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: both (b) & (c)
Correct Answer: air
Correct Answer: mixture
Correct Answer: compound
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.
Correct Answer: soft soaps
Correct Answer: Lithium
Explanation:
Lithium is the lightest of all the metals due to its low atomic number among meetals
Correct Answer: fractional distillation of liquid air
Explanation:
The two main components of air are nitrogen and oxygen. They are seperated by the fractional distillation of liquid air. Liquefied air contains liquid nitrogen and liquid oxygen. Liquid nitrogen with the lower boiling point more readily evaporates than the less volatile liquid oxygen.
Comments
There are no comments.More in General Knowledge:
Programming
Copyright ©CuriousTab. All rights reserved.