Chemistry problems
- 1. The biogas used for cooking is a mixture of which of the following ?
Options- A. Carbon dioxide & oxygen
- B. Isobutane & propane
- C. Methane & carbon monoxide
- D. Methane & carbon dioxide Also asked in: Bank Exams
Correct Answer: Methane & carbon dioxide
- 2. On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because ________
Options- A. Mercury is a metal
- B. Density of mercury is greater than that of water
- C. Cohesion of mercury is greater than its adhesion with glass
- D. Cohesion of water is greater than its adhesion with glass Also asked in: Bank Exams
Correct Answer: Cohesion of mercury is greater than its adhesion with glass
- 3. The property of metals by which they can be beaten into thin sheets is called _______________.
Options- A. ductility
- B. malleability
- C. viscosity
- D. tensile strength Also asked in: Bank Exams
Correct Answer: malleability
- 4. The passage of an electric current through a conducting liquid causes ___________.
Options- A. Galvanisation
- B. Evaporation
- C. Physical Reaction
- D. Chemical Reaction Also asked in: Bank Exams
Correct Answer: Chemical Reaction
- 5. PET is a very familiar form of _____________. It is used for making bottles.
Options- A. Nylon
- B. Acrylic
- C. Polyester
- D. Rayon Also asked in: Bank Exams
Correct Answer: Polyester
- 6. The (O-H) bond in CH3OH is _____.
Options- A. polar covalent
- B. ionic
- C. non polar covalent
- D. cationic Also asked in: Bank Exams
Correct Answer: polar covalent
- 7. Ethane gas has a slightly ______ taste.
Options- A. sweet
- B. bitter
- C. sour
- D. salty Also asked in: Bank Exams
Correct Answer: sweet
- 8. What type of compound is Lecithin?
Options- A. Sterol
- B. Phospholipid
- C. Lipoprotein
- D. Glycolipid Also asked in: AIEEE, Bank Exams, Analyst, Bank PO
Correct Answer: Phospholipid
Explanation:
Lecithin is a Phospholipid type of compounds. The main phospholipids in lecithin from soya and sunflower are phosphatidyl choline, phosphatidyl inositol, phosphatidyl ethanolamine, and phosphatidic acid.
- 9. The most abundant metal in earth crust is
Options- A. Iron
- B. magnesium
- C. calcium
- D. aluminium Discuss
Correct Answer: aluminium
- 10. Cathode rays have
Options- A. mass only
- B. charge only
- C. no mass and no charge
- D. mass and charge both Discuss
Correct Answer: mass and charge both
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