Discussion
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- Question
The salt concentration (measured as salinity in parts per thousand), is _______ % in sea.
Options- A. 10-20
- B. 30-35
- C. 40-50
- D. 60-70
- Correct Answer
- 30-35
- 1. Vinegar and Baking Soda together produce ____________.
Options- A. Copper
- B. Carbon Dioxide
- C. Copper Sulphate
- D. Magnesium Oxide Discuss
- 2. Crystallisation is an example of?
Options- A. Physical Change
- B. Chemical Change
- C. Chemical Reaction
- D. Galvanisation Discuss
- 3. Which of the following is used as non stick coating for cooking utensils?
Options- A. Perspex
- B. Styrofoam
- C. Polystyrene
- D. Teflon Discuss
- 4. Atomic explosion is triggered by
Options- A. thermo nuclear reaction
- B. chemical reaction
- C. controlled chain reaction
- D. uncontrolled chain reaction Discuss
- 5. Terylene is a condensation polymer of ethylene glycol and which acid?
Options- A. Benzoic Acid
- B. Salicylic acid
- C. Phthalic acid
- D. Terephthalic acid Discuss
- 6. What is the process of rust forming on iron called?
Options- A. Rusting
- B. Crystallisation
- C. Shovel
- D. Spade Discuss
- 7. Which base is present in soap?
Options- A. Sodium hydroxide
- B. Silicon dioxide
- C. Calcium hydroxide
- D. Ammonium hydroxide Discuss
- 8. Which of the following statement(s) is/are CORRECT? I. Acids are sour in taste and generate H+ ions. II. Acids are sour in taste and generate OH? ions. III. Bases are bitter intaste and generate OH? ions.
Options- A. Only I and III
- B. Only I and II
- C. Only II and III
- D. All I, II and III Discuss
- 9. Binomial Nomenclature was founded by
Options- A. Charles Darwin
- B. Robert Nucleus
- C. Carl Linnaeus
- D. Lamarck Discuss
- 10. Magnetite is an ore/mineral of
Options- A. Beryllium
- B. Chromium
- C. Iron
- D. Lead Discuss
Chemistry problems
Search Results
Correct Answer: Carbon Dioxide
Correct Answer: Physical Change
Correct Answer: Teflon
Correct Answer: uncontrolled chain reaction
Correct Answer: Terephthalic acid
Correct Answer: Rusting
Correct Answer: Sodium hydroxide
Correct Answer: Only I and III
Correct Answer: Carl Linnaeus
Correct Answer: Iron
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