Chemistry problems
- 1. The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its ___________.
Options- A. Crystallisation
- B. Crystallisation
- C. Evaporation
- D. Evaporation Also asked in: Bank Exams
Correct Answer: Crystallisation
- 2. The substances which have very low ignition temperature and can easily catch fire with a flame are called _____________ substances.
Options- A. hazardous
- B. perilous
- C. incombustible
- D. inflammable Also asked in: Bank Exams
Correct Answer: inflammable
- 3. Kidney stones are composed of ______.
Options- A. Calcium Oxalate
- B. Sodium Chloride
- C. Magnesium Nitrate
- D. Calcium Bicarbonate Also asked in: Bank Exams
Correct Answer: Calcium Oxalate
- 4. A change in which no new substances are formed is called _____________.
Options- A. Physical Change
- B. Chemical Change
- C. Rusting
- D. Galvanisation Also asked in: Bank Exams
Correct Answer: Physical Change
- 5. NaHCO3 is chemical formula for ___________.
Options- A. Borax
- B. Vinegar
- C. Lime
- D. Baking soda Also asked in: Bank Exams
Correct Answer: Baking soda
- 6. The Chemical formula of Ammonium nitrate is ___________.
Options- A. (NH2)2NO3
- B. NH4NO3
- C. NH4(NO3)2
- D. NH2NO3 Also asked in: Bank Exams
Correct Answer: NH4NO3
- 7. Which of the following statement is INCORRECT regarding Sodium?
Options- A. Sodium reacts vigorously with oxygen and water
- B. A lot of heat is generated when sodium reacts with water and oxygen
- C. It is stored in kerosene
- D. It is a non-metal Also asked in: Bank Exams
Correct Answer: It is a non-metal
- 8. Which among the following difference between aerobic and anaerobic respiration is INCORRECT?
Options- A. Aerobic respiration takes place in presence of oxygen ? Anaerobic respiration takes place in the absence of oxygen
- B. In Aerobic respiration pyruvate is broken down into ethanol and carbon dioxide ? In Anaerobic respiration pyruvate is broken down into carbon dioxide and water
- C. In Aerobic respiration more energy is released ? In Anaerobic respiration less energy is released
- D. Aerobic respiration takes place in mitochondria? Anaerobic respiration takes place in yeast Also asked in: Bank Exams
Correct Answer: In Aerobic respiration pyruvate is broken down into ethanol and carbon dioxide ? In Anaerobic respiration pyruvate is broken down into carbon dioxide and water
- 9. ___________ is obtained by evaporation of sea.
Options- A. Sugar
- B. Iron
- C. Salt
- D. Steel Also asked in: Bank Exams
Correct Answer: Salt
- 10. Which of the following statement(s) is/are INCORRECT regarding Phosphorus?
Options- A. Phosphorus reacts vigorously with water
- B. It is a non-metal
- C. It catches fire on reacting with air
- D. It is found in group 15 of the modern periodic table Also asked in: Bank Exams
Correct Answer: Phosphorus reacts vigorously with water
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