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- Question
Tertiary sewage treatment is designed to remove
Options- A. Calcium and Phosphorous
- B. Nitrogen and Calcium
- C. Phosphorous and Nitrogen
- D. Calcium and Nitrogen
- Correct Answer
- Phosphorous and Nitrogen
- 1. A feature of catabolic reactions is that they
Options- A. occur only in mitochondria
- B. occur only during loss of body weight
- C. involve release of energy
- D. involve consumption of energy Discuss
- 2. Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at ?6°C will be: (Kf for water = 1.86 Kg/mol and molar mass of ethylene glycol = 62 kg/mol)
Options- A. 204.60 g
- B. 304.30 g
- C. 804.32 g
- D. 400.00 g Discuss
- 3. The magnetic moment (spin only) of [NiCl4]2- is
Options- A. 1.41 BM
- B. 1.82 BM
- C. 5.46 BM
- D. 2.82 BM Discuss
- 4. Which of the following describes the process of glycolysis?
Options- A. It represents the first stage in the chemical oxidation of glucose by a cell.
- B. Breakdown of Glucose
- C. Converts Glucose to Pyruvate
- D. All the above Discuss
- 5. Which solution has the highest pH?
Options- A. 50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq)
- B. 50.0 mL 0.0500 M sodium hydroxide, NaOH (aq)
- C. 50.0 mL 0.0500 M nitric acid, HNO3 (aq)
- D. 50.0 mL 0.0500 M nitrous acid, HNO2 (aq) Discuss
- 6. Which of the following is also known as Carbolic Acid?
Options- A. Phenol
- B. Hydroxide
- C. Sulphuric Acid
- D. Ethanol Discuss
- 7. Which of the following gases is heavier than oxygen?
Options- A. Carbon dioxide
- B. Ammonia
- C. Methane
- D. Helium Discuss
- 8. Which among the following is false about natural rubber?
Options- A. It is an elastomer
- B. It is a monomer of cisisoprene
- C. Natural rubber is a polymer of chloroprene
- D. It is heated with sulphur compounds to improve its properties Discuss
- 9. A bond formed by the transfer of electrons betwwen atoms of the elements is called
Options- A. ionic bond
- B. covalent bond
- C. co ordinate bond
- D. none Discuss
- 10. Standard Electrode potential is measured in terms of
Options- A. Pyrometer
- B. Electrometer
- C. Thermometer
- D. Voltmeter Discuss
Chemistry problems
Search Results
Correct Answer: involve release of energy
Correct Answer: 804.32 g
Explanation:
for ethylene glycol in aq. solution
=> w = 800 g
So, the weight of solute should be more than 800 g.
Correct Answer: 2.82 BM
Explanation:
Hybridisation of Ni is
Unpaired in is 2
So
Correct Answer: All the above
Correct Answer: 50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq)
Explanation:
50.0 mL 0.0500 M calcium hydroxide, Ca(OH)2 (aq) has the highest pH value.
Sodium hydroxide and Calcium hydroxide are strong bases so they completely ionize in solution. Because they ionize at the same rate, and Calcium hydroxide has the higher pH calculated, then Calcium hydroxide, in fact, has the highest pH.
Nitric acid is a strong acid, so it completely ionizes in water. Whilst nitrous acid is a weak acid. Therefore, the nitric acid solution has the LOWEST ph.
Correct Answer: Phenol
Correct Answer: Carbon dioxide
Correct Answer: It is a monomer of cisisoprene
Correct Answer: ionic bond
Correct Answer: Voltmeter
Explanation:
Voltmeter is used to measure Standard Electrode Potential
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