Chemistry problems
- 1. A particle which is four times in mass and two times in charge that of proton is
Options- A. helium atom
- B. an alpha particle
- C. deuteron
- D. tritium Discuss
Correct Answer: an alpha particle
- 2. Energy produced in nuclear reaction is given by
Options- A. Charle's law
- B. Grahm's law
- C. Gay - Lussac's law
- D. Einstein's law Discuss
Correct Answer: Einstein's law
- 3. In atomic reactors,graphite is used as
Options- A. lubricant
- B. fuel
- C. linear of the ractor
- D. moderator Discuss
Correct Answer: moderator
- 4. The main constituent of biogas is
Options- A. Butane
- B. Methane
- C. Hydrogen Sulphide
- D. Carbondioxide Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk, Bank PO
Correct Answer: Methane
Explanation:
The main constituent of biogas is methane (55-70%), CO2 (30-45%) and some traces of gases such as H2S and ammonia.
Biogas is produced under anaerobic conditions; the process is denominated as anaerobic digestion.
- 5. Which of the following is malleable?
Options- A. Ice
- B. Gold
- C. Stone
- D. Pottery Also asked in: AIEEE, Bank Exams, CAT, GATE, GRE, Analyst, Bank Clerk, Bank PO
Correct Answer: Gold
Explanation:
Here in the given options, Gold is a malleable substance.
Malleable substance means a metal or a material able to be hammered or pressed into shape without breaking or cracking. i.e, tensile.
- 6. What state of matter is Jello?
Options- A. Liquid
- B. Solid
- C. Colloid
- D. Gas Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO, IT Trainer
Correct Answer: Colloid
Explanation:
Jello is a colloid, a semi-rigid structure i.e, semi-solid suspended in a liquid. When you Heat it up a bit and you'll break the protein bonds of the gelatin and it will liquefy completely and if you freeze, it becomes solid.
- 7. What is the systematic name of Mg(NO3)2?
Options- A. Manganese nitrite
- B. Magnesium nitrite
- C. Magnesium nitrate
- D. Manganese nitrate Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO, IT Trainer
Correct Answer: Magnesium nitrate
Explanation:
Mg(NO3)2 is Magnesium nitrate.
In the case of Mg(NO3)2, the metal in the compound is magnesium (Mg), and the non-metal here is called the nitrate ion (NO3). This makes the name of the compound simply magnesium nitrate.
- 8. What is the systematic name of NH4ClO3 ?
Options- A. Ammonium Chloride
- B. Ammonium Chlorate
- C. Ammonium Chlorane
- D. Ammonium Chlorine Also asked in: AIEEE, GATE, Analyst
Correct Answer: Ammonium Chlorate
Explanation:
In common we all call the systematic name of as Ammonium Chlorate. But originally the systematic name is azanium trioxidochlorate.
- 9. Li3PO4 compound name?
Options- A. Lithium perchlorate
- B. Lithium phyrite
- C. Lithium phosphate
- D. None Also asked in: AIEEE, Bank Exams, Analyst, Bank Clerk
Correct Answer: Lithium phosphate
Explanation:
The given compund name is Lithium phosphate.
Lithium phosphate is a white crystal at room temperature. It is slightly soluble in water.
It can be used to produce glass, disk, colorful phosphor powder. It can also be used as a catalyst in some reactions.
- 10. Which of the following is a Decomposition Reaction?
Options- A. 2HgO ----> 2Hg + O2
- B. 6NaNO3 ----> 6NaNO2 + 3O2
- C. ZnCO3 ----> ZnO + CO2
- D. All the above Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: All the above
Explanation:
All the given reactions are Decomposition reactions.
Decomposition reaction is a reaction in which only one reactant is splitted into two or more products.
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