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- Question
Adding which substance gives blue colour to glass?
Options- A. Manganese oxide
- B. Cobalt oxide
- C. Chromium oxide
- D. Iron oxide
- Correct Answer
- Cobalt oxide
- 1. Name the acid present in lemon.
Options- A. Phosphoric acid
- B. Carbonic acid
- C. Citric acid
- D. Malic acid Discuss
- 2. Which among the following compounds has the strongest hydrogen bond?
Options- A. HI
- B. HCl
- C. HF
- D. HBr Discuss
- 3. Which of the following elements has the lowest melting point?
Options- A. Platinum
- B. Carbon
- C. Cobalt
- D. Krypton Discuss
- 4. Which compound is used in Anti-malarial drug?
Options- A. Aspirin
- B. Neosporin
- C. Chloroquin
- D. Antacid Discuss
- 5. Glass is also called ________.
Options- A. Supercooled liquid
- B. Super liquid
- C. Ideal liquid
- D. Distilled liquid Discuss
- 6. What is the base of the Octal Numeral System?
Options- A. 8
- B. 16
- C. 32
- D. 64 Discuss
- 7. Which of the following elements has the lowest melting point?
Options- A. Bromine
- B. Zinc
- C. Lead
- D. Calcium Discuss
- 8. A substance that cannot be broken down into simpler substances
Options- A. Heterogenous mixure
- B. Compound
- C. Homogenous mixture
- D. Element Discuss
- 9. Which of the following is the lightest metal?
Options- A. Lithium
- B. Silver
- C. Mercury
- D. Lead Discuss
- 10. Water always contains hydrogen and oxygen in the ratio 1:8 by weight.This is in accordance with the
Options- A. Law of Multiple Proportions
- B. Law of Definite Proportion
- C. Law of Conservation of mass
- D. Law of Reciprocal Proportions Discuss
Chemistry problems
Search Results
Correct Answer: Citric acid
Correct Answer: HF
Correct Answer: Krypton
Correct Answer: Chloroquin
Correct Answer: Supercooled liquid
Correct Answer: 8
Correct Answer: Bromine
Correct Answer: Element
Explanation:
A substance that cannot be decomposed (broken down) into simpler substances by ordinary chemical means.
Examples: gold, iron, carbon, hydrogen, oxygen, nitrogen.
Material composed of only one kind of matter throughout (same atoms or same molecules).
Correct Answer: Lithium
Correct Answer: Law of Definite Proportion
Explanation:
The Law of Definite Proportion states that the same compound, wherever found or however made, always contains the same elements combined together in the same fixede ratio by weight.
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