Chemistry problems
- 2. Which of the following is not a subatomic particle?
Options- A. neutron
- B. ion
- C. electron
- D. proton Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: ion
Explanation:
The particles which makes upon an atom are called subatomic particles. Electrons, protons and Neutrons that makes an atom are called subatomic particles.
Whereas,
An ion is an atom or group of atoms in which the number of electrons is different from the number of protons.
- 3. The charge on positron is equal to the charge on
Options- A. proton
- B. electron
- C. alpha- particle
- D. neutron Discuss
Correct Answer: proton
- 4. The reduction potential of hydrogen half-cell will be negative if : (1) PH2 = 2 atm and [H+] = 2.0 M (2) PH2 = 1 atm and [H+] = 2.0 M (3) PH2 = 1 atm and [H+] = 1.0 M (4) PH2 = 2 atm and [H+] = 1.0 M
Options- A. Option 1
- B. Option 2
- C. Option 3
- D. Option 4 Also asked in: AIEEE
Correct Answer: Option 4
Explanation:
Apply Nernst equation
Therefore E is Negative
- 5. 1 Mole of CO2 mass is
Options- A. 32 gms
- B. 44 gms
- C. 16 gms
- D. 12 gms Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: 44 gms
Explanation:
We know that,
Mass of Carbon = 12 gms
Mass of Oxygen = 16 gms = O2 => 16 * 2 = 32 gms
=> Mass of 1 mole of CO2 = 12 + 32 = 44 gms.
- 6. The crop that has the highest photosynthetic activity -
Options- A. Sugarcane
- B. Wheat
- C. Cotton
- D. Rice Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: Sugarcane
Explanation:
Corn, sugar cane, and sorghum are C4 plants. These plants are economically important in part because of their relatively high photosynthetic efficiencies compared to many other crops.
- 7. The difference between a nuclear reactor and atomic bomb is that ___________
Options- A. no chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction
- B. the chain reaction in nuclear reactor is controlled
- C. the chain reaction in nuclear reactor is not controlled
- D. no-chain reaction takes place in atomic bomb while it takes place in nuclear reactor Discuss
Correct Answer: the chain reaction in nuclear reactor is controlled
- 8. Positive ions are formed from neutral atoms by loss of
Options- A. neutrons
- B. protons
- C. nuclear charge
- D. electrons Discuss
Correct Answer: electrons
- 10. Who is the father of modern chemistry?
Options- A. Priestley
- B. Lavoisier
- C. Dalton
- D. Mendeleeff Also asked in: Bank Clerk, Bank PO, AIEEE, Bank Exams, Analyst
Correct Answer: Lavoisier
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