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- Question
Coagulation during water treatment is designed to remove
Options- A. Sand and gravel
- B. Bad smells
- C. Pathogenic microorganisms
- D. Particles suspended in water
- Correct Answer
- Particles suspended in water
ExplanationCoagulation is a chemical process that involves neutralization of charge. Coagulation during water treatment is designed to remove particles suspended in water.
- 1. Which one of the following can be oxidised to the corresponding carbonyl compound:
Options- A. 2-methyl-2-hydroxy propane
- B. 2-hydroxy propane
- C. o-Nitrophenol
- D. Phenol Discuss
- 2. Leakage of which of the following gases caused the Bhopal gas tragedy ?
Options- A. Carbon monoxide
- B. Methyl isocyanate
- C. Nitrous oxide
- D. Hydrogen sulphide Discuss
- 3. Which of the following does not contain the material particles
Options- A. alpha - rays
- B. beta - rays
- C. gamma - rays
- D. anode rays Discuss
- 4. The fundamental particles present in equal numbers in neutral atoms are
Options- A. protons and electrons
- B. neutrons and electrons
- C. protons and neutrons
- D. protons and positrons Discuss
- 5. Steel contains
Options- A. no carbon
- B. < 2% of carbon
- C. > 10% of carbon
- D. > 29% of carbon Discuss
- 6. The law of constant proportions was enunciated by
Options- A. Dalton
- B. Berthelot
- C. Avogadro
- D. Proust Discuss
- 7. Of the following elements, which one has the same oxidation state in all of its compounds?
Options- A. Hydrogen
- B. Fluroine
- C. Carbon
- D. oxygen Discuss
- 8. TEL minimise the knocking effect when mixed with petrol, it acts as_______
Options- A. Positive catalyst
- B. Negative catalyst
- C. Auto catalyst
- D. Induced catalyst Discuss
- 9. Mg+O2=MgO Balance the above Chemical equation?
Options- A. 2Mg + O2 ----> 2MgO
- B. 2Mg + O ----> 2MgO
- C. 2Mg + O ----> MgO2
- D. 2Mg + O2 ----> MgO2 Discuss
- 10. In a face centred cubic lattice, atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points, the formula of the compound is 1) A2B5 2) A3B2 3) A2B3 4) A3B4
Options- A. Option 1
- B. Option 2
- C. Option 3
- D. Option 4 Discuss
Chemistry problems
Search Results
Correct Answer: 2-hydroxy propane
Correct Answer: Methyl isocyanate
Correct Answer: gamma - rays
Correct Answer: protons and electrons
Correct Answer: < 2% of carbon
Explanation:
To make steel, iron ore is first mined from the ground. It is then smelted in blast furnaces where the impurities are removed and carbon is added.
In simple, steel is iron alloyed with carbon, usually 0 - 2%.
Correct Answer: Proust
Correct Answer: Fluroine
Correct Answer: Negative catalyst
Correct Answer: 2Mg + O2 ----> 2MgO
Explanation:
Given Equation is
Balancing the Chemical Equation is nothing but Conservation of Matter. As Matter is Neither created nor Destroyed, it must be conserved.
Here we have 1 Mg and 2 O on the left side and 1 Mg and 1 O on the right side
To balance that, add 1 Mg on the left side so that it becomes 2 Mg and 2 O on the left side
i.e,
Here it has 2 Mg & 2 O on the left side and 2 Mg and 2 O on the right side and the Chemical equation is Balanced.
Correct Answer: Option 1
Explanation:
;
So formula of compound is
i.e., .
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