Chemistry problems
- 1. One turn of the citric acid cycle produces
Options- A. two molecules of carbon dioxide are released
- B. three molecules of NADH and one molecule of FADH2 are generated
- C. one molecule of ATP or GTP is produced
- D. All of the above Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: All of the above
Explanation:
One turn of the citric acid cycle produces
1. Two molecules of carbon dioxide are released.
2. One molecule of ATP or GTP is produced.
3. Tree molecules of NADH and one molecule of FADH2 are generated.
- 2. Which element has the lowest ionization energy?
Options- A. He
- B. Ne
- C. Fr
- D. Rb Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: Fr
Explanation:
Ionisation energy is the energy required to remove one mole of electrons from one mole of gaseous atoms. Atoms are more stable when they have full valence shells.
The ionization energy decreases from top to bottom in groups, and increases from left to right across a period.
HGence, in this trend Francium (Fr) has the lowest ionization energy.
- 3. The ore which is found in abundance in India is
Options- A. fluorspar
- B. magnetite
- C. monazite
- D. bauxite Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: monazite
Explanation:
The ore which is found in abundance in India is monazite.
- 4. Which metal is liquid at room temperature?
Options- A. Bromine
- B. Chlorine
- C. Mercury
- D. Cesium Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: Mercury
Explanation:
Mercury is the only metal that remains in liquid at room temperature.
- 5. The gases used in different types of welding would include
Options- A. Acetylene
- B. Oxygen
- C. Oxygen and Acetylene
- D. Nitrogen, Oxygen and Acetylene Also asked in: AIEEE, Bank Exams
Correct Answer: Oxygen and Acetylene
Explanation:
Oxygen and Acetylene are the gases used in different types of welding.
- 6. Which molecule is used up in photosynthesis?
Options- A. Water
- B. Carbohydrates
- C. Oxgen
- D. Sugar Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: Water
Explanation:
The first step in photosynthesis is to split the water molecule using sun light.
- 7. Which one of the following is not true for minerals?
Options- A. they can be a liquid, solid, or glass
- B. they can be identified by characteristic physical properties
- C. they have a specific, internal, crystalline structure
- D. they have a specific, predictable chemical composition Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: they can be a liquid, solid, or glass
Explanation:
A mineral is a naturally occurring, inorganic solid, with a definite chemical composition. They cannot be in liquid or gas state. They exists only in solid state.
- 8. Which of the following is not soluble in water?
Options- A. sodium chloride
- B. potassium sulfate
- C. copper(II) hydroxide
- D. silver nitrate Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: potassium sulfate
Explanation:
We know that,
All nitrates are soluble in water.
All chlorides are soluble in water with the exception of those formed with silver , lead , mercury ions as all halides are soluble.
Sulphates are soluble in water.
Hydroxides are not soluble in water.
Hence, copper(II) hydroxide is not soluble in water.
- 9. Which of the following has the highest boiling point?
Options- A. 2,3-dimethylbutane
- B. 2-methylpentane
- C. 2,2-dimethylbutane
- D. 1,2-methylpentane Also asked in: AIEEE, CAT, Analyst
Correct Answer: 2,2-dimethylbutane
Explanation:
Due to the molecules present in the 2,2-dimethylbutane are closely packed, it has the highest boiling point.
- 10. Which of the following elements is used for vulcanizing rubber?
Options- A. Sulphur
- B. Chlorine
- C. Bromine
- D. Phosphorus Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk
Correct Answer: Sulphur
Explanation:
Vulcanization of rubber is a process of improvement of the rubber elasticity and strength by heating it in the presence of sulfur rubber much stronger, more flexible, and more resistant to heat and other environmental conditions.
More in General Knowledge:
Programming
Copyright ©CuriousTab. All rights reserved.