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Chemistry One-Liners for various competitive examinations- January 27th
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Here are some important Chemistry one-liners for students competing for various exams
Watch some of the important Chemistry Bits below.
1- The mass number of a nucleus is-
1- Always more than the atomic weight.
2- Always less than its atomic number.
3- The sum of the number of neutrons and protons.
4- None of these.
2- From which among the following, Phosphorus is mainly extracted?
1- Fertiliser.
2- Bone Ash.
3- Sand.
4- Ash.
3- The main ingredient of cement among the following is?
1- Gypsum
2- Limestone.
3- Silica Clay
4- Ash.
4- This material among the following can be deformed permanently by heat and pressure-
1- Polymer.
2- Thermoplastic.
3- Chemical Compound.
4- Thermoset.
5-Nylon is prepared from which among the following?
1- Ethylene glycol and adipic acid phthalic acid.
2-Ethylene glycol and nitric acid diamine.
3- Hexamethylene diamine and phthalic acid.
4-Adipic acid and hexamethylene diamine.
6-Ascorbic acid is another name for this vitamin.
1- B
2- C.
3- A.
4- D
7- Ordinary Microscope can measure up to which among the following?
1- 500nm
2- 400nm.
3- 700nm
4- 200nm.
8- This is another name for electron pool theory-
1- Liquid theory.
2- Electron gas theory.
3- Pool theory
4- Solid theory.
9- In which Metallic theory was proposed?
1- 1987
2- 1978.
3- 1923.
4- 1900.
10- In 1748, the first-time word used in connection with electricity was-
1- Charge.
2- Battery.
3- Electrode.
4- All of them.
11- What happens when TEL (Tera Ethyl Lead) is added to petrol?
1- Decrease the anti-knocking rating.
2- Increase the anti-knocking rating.
3- Decrease the B.P of petrol.
4- It will increase the B.P of petrol.
12- Chlorine’s (Cl) relative atomic mass is 35.5. This half number is due to-
1- Half proton.
2- Isotopes.
3- Half Electron.
4- Half Neutron.
13- For deep sea diving oxygen is usually mixed with which among the following?
1- Nitrogen Gas.
2- Hydrogen.
3- Helium.
4- Argon Gas.
14- Dalton’s law of partial pressure has applications in-
1- Respiration.
2- Metabolism.
3- Circulation.
4- Excretion.
15- The hypothesis that equal volume of all gases possess the same number of molecules is called as-
1- Avogadro hypothesis.
2-Avogadro constant.
3- Alvarado’s theory
4- Avagadro’s equilibria.
ANSWERS-
1- The sum of the number of neutrons and protons.
2-Bone Ash.
3-Gypsum.
4-Thermoset
5-Adipic acid and hexamethylene diamine.
6- C
7- 500nm
8-Electron gas theory.
9-1923.
10-Battery.
11-Increase the anti-knocking rating.
12-Isotopes.
13-Helium.
14-Respiration.
15-Avogadro hypothesis.
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