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- Question
Carbon, Diamond and Graphite are together called
Options- A. Isomers
- B. Isotopes
- C. Allotrope
- D. Isomorphs
- Correct Answer
- Allotrope
- 1. In the thermite process, the reducing agent is
Options- A. Chlorine
- B. Aluminium
- C. Silicon
- D. Iron Discuss
- 2. What is the value of triple point (solid, liquid and gas) of Water?
Options- A. 273.16° C
- B. -273.16 K
- C. 273.16 K
- D. 0° C Discuss
- 3. What relationship exists between an enzyme and a catalyst? Discuss
- 4. What is the general formula for a straight-chain alkane?
Options- A. C2nH2n+3.
- B. CnH2n+2
- C. CnH2n
- D. CnH3n+2. Discuss
- 5. The chemical makeup of a rock is
Options- A. Nutrients
- B. Minerals
- C. Metals
- D. Water Discuss
- 6. The phosphorus cycle differs from the biogeochemical cycles in that
Options- A. does not have atmospheric reservoir
- B. uses water more
- C. have atmospheric reservoir
- D. None of the above Discuss
- 7. 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 Discuss
- 8. Which element has the lowest ionization energy?
Options- A. He
- B. Ne
- C. Fr
- D. Rb Discuss
- 9. The ore which is found in abundance in India is
Options- A. fluorspar
- B. magnetite
- C. monazite
- D. bauxite Discuss
- 10. Which metal is liquid at room temperature?
Options- A. Bromine
- B. Chlorine
- C. Mercury
- D. Cesium Discuss
Chemistry problems
Search Results
Correct Answer: Aluminium
Explanation:
In the thermite process, the reducing agent is Aluminium.
Correct Answer: 273.16 K
Explanation:
The temperature at which a substance can exist in equilibrium in the liquid, solid, and gaseous states. The triple point of pure water is at 0.01°C (273.16K, 32.01°F).
Correct Answer: An enzyme is a variety of catalyst and is the relation between tham A catalyst is a chemical that increases the rate of a chemical reaction without itself being changed by the reaction
Correct Answer: CnH2n+2
Correct Answer: Minerals
Explanation:
The chemical composition of a rock is mainly minerals.
Correct Answer: does not have atmospheric reservoir
Explanation:
Unlike other gas cycles, the phosphorus cycle differs in having atmospheric reservoir. No other gases are involved in it.
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.
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.
Correct Answer: monazite
Explanation:
The ore which is found in abundance in India is monazite.
Correct Answer: Mercury
Explanation:
Mercury is the only metal that remains in liquid at room temperature.
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