A. B. C. D.: Answer: Explanation
A. B. C. D.: Answer: Explanation
A. B. C. D.: Answer: Explanation
A. Oxygen
B. Hydrogen sulphide
C. Carbon dioxide
D. Nitrogen
Answer: Option B
Explanation:
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2. Which of the following is a non metal that remains liquid at room temperature?
A. Phosphorous
B. Bromine
C. Chlorine
D. Helium
Answer: Option B
Explanation:
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B. magnesium
C. iron
D. calcium
Answer: Option B
Explanation:
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B. Silicon
C. Charcoal
D. Phosphorous
Answer: Option A
Explanation:
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B. Mercury
C. Lead
D. Zinc
Answer: Option B
Explanation:
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B. H2O
C. Al2O3
D. CaSiO3
Answer: Option B
Explanation:
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B. hydrogen
C. carbon dioxide
D. oxygen
Answer: Option A
Explanation:
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B. Calcium bicarbonate
C. Sodium bicarbonate
D. Calcium carbonate
Answer: Option A
Explanation:
What is the scientific name for washing soda?
Sodium carbonate (also known as washing soda or soda ash), Na2CO3 is a sodium salt of
carbonic acid.
Scientific name for baking soda?
Sodium bicarbonate or sodium hydrogen carbonate is the chemical compound with the formula
NaHCO3. Sodium bicarbonate is a white solid that is crystalline but often appears as a fine
powder. Since it has long been known and is widely used, the salt has many related names such
as baking soda, bread soda, cooking soda, and bicarbonate of soda.
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B. germanium oxide
D. sodium silicate
Answer: Option A
Explanation:
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B. Nitrous oxide
C. Carbon dioxide
D. Hydrogen
Answer: Option D
Explanation:
In order, the most abundant greenhouse gases in Earth's atmosphere are:
* water vapor
* carbon dioxide
* methane
* nitrous oxide
* ozone
* chlorofluorocarbons