Chemistry Set 2

General Knowledge (GK),

Union Public Service Commission (UPSC),

Indian Administrative Service (IAS),

Staff Selection Commission (SSC)

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This set of General Science Multiple Choice Questions & Answers (MCQs) focuses on Chemistry Set 2

Q1 | Which among the following is the lowest atomic number element without any stable isotopes?
  • Technetium
  • Molybdenum
  • Ruthenium
  • Niobium
Answer: Technetium
Q2 | Which among the following is the main constituent of malleable metal alloy Pewter ?
  • Copper
  • Zinc
  • Tin
  • Bismuth
Answer: Tin
Q3 | How many parts are of other metals in a 17 carat Gold?
  • 3
  • 5
  • 7
  • 9
Answer: 7
Q4 | Which among the following does not come under carbon Group of Periodic Table?
  • silicon
  • germanium
  • tin
  • selenium
Answer: selenium
Q5 | Which among the following is not correctly matched?
  • Sodium: Natrium
  • Pottassium : Kalium
  • Mercury :Hydrargyrum
  • Arsenic : Stibium
Answer: Arsenic : Stibium
Q6 | The chemical oxygen demand COD test is commonly used to measure which of thefollowing?
  • amount of organic compounds in water
  • amount of oxygen in water
  • amount of oxygen in a chemical
  • amount of oxygen used in a oxygenation process
Answer: amount of organic compounds in water
Q7 | Which among the following is an organic mineral?
  • Amber
  • Hornblende
  • Angite
  • Analcime
Answer: Amber
Q8 | Liming is the application of calcium and magnesium rich materials to soil in various forms, including marl, chalk, limestone, or hydrated lime. What is the purpose of liming?
  • Increase the Soil pH
  • Increase the bacteria activity
  • Both A & B
  • Decrease the bacterial activity
Answer: Both A & B
Q9 | Who among the following established that genetic code of all organisms is spelled out inthree-letter words, each set of three nucleotides codes for a specific amino acid?
  • Hargobind Khorana
  • Barbara McClintock
  • Theodor O. Diener
  • Joseph L. Goldstein
Answer: Hargobind Khorana
Q10 | Which among the following is a main component of some alert tablets such as Alert, No Doz, Stay Awake & Vivarin?
  • Thein
  • Caffeine
  • Nicotine
  • catechins
Answer: Caffeine
Q11 | Which among the following compound of barium is used as radio contrast agent for X-ray imaging and other diagnostic procedures and also commonly called as Barium Food?
  • Barium Carbonate
  • Barium Sulphate
  • Barium Bromide
  • Barium hydroxide
Answer: Barium Sulphate
Q12 | Which among the following is used as an antidote?
  • Paracetamol
  • Nicotine
  • Thiamine
  • Activated Charcoal
Answer: Activated Charcoal
Q13 | Which among the following will undergo a chemical reaction depending on the pH of thesolution?
  • Calcium Oxide
  • Zinc Oxide
  • Ferric Oxide
  • Ferrous Oxide
Answer: Zinc Oxide
Q14 | Bring out the statement which is wrong:
  • Acetone is used as a solvent
  • Adrenaline is used in the event of heart failure
  • graphite is an example of allotropy
  • All are correct
Answer: All are correct
Q15 | Which among the following basic atoms are must in an Alkaloid?
  • Sodium
  • Nitrogen
  • Magnesium
  • Potassium
Answer: Nitrogen
Q16 | F block elements in the periodic table which are commonly called Lanthanides have thefollowing atomic numbers:
  • 57-70
  • 58-71
  • 59-72
  • 58-70
Answer: 58-71
Q17 | The volume of a gas at a given pressure and temperature is proportional to the number of atoms or molecules regardless of the nature of the gas. This concept is called as___?
  • Avogadro‘s law
  • Dalton‘s law
  • Henry‘s law
  • Ideal gas law
Answer: Avogadro‘s law
Q18 | Who among the following is known to manufacture first Cyclotron?
  • Ernest Lawrence
  • Niels Bohr
  • Rutherford
  • Max Born
Answer: Ernest Lawrence
Q19 | British Scientist JJ Thomson was awarded Nobel prize in Physics in 1906 for discovery ofwhich of the following particle?
  • Electron
  • Proton
  • Neutron
  • Radio activity
Answer: Electron
Q20 | Charles Goodyear is known for which of the following?
  • Experiments on Rubber Plants
  • Vulcanization of Rubber
  • Invention of Radial Tyres
  • Invention of Artificial Rubber
Answer: Vulcanization of Rubber
Q21 | Which among the following gas is used in Balloons?
  • Hydrogen
  • Helium
  • Nitrogen
  • Oxygen
Answer: Helium
Q22 | Which among the following is the most important characteristic of Noble metals?
  • Luster
  • Non reactive nature
  • Preciousness
  • Rare availability
Answer: Non reactive nature
Q23 | What is the atomic number of Transuranic elements?
  • Greater than 90
  • Greater than 92
  • Greater than 91
  • Greater than 93
Answer: Greater than 92
Q24 | A Cyclotron is ___?
  • A charged particle
  • A particle Accelerator
  • A magnetic particle
  • A radioactive particle
Answer: A particle Accelerator
Q25 | Steel is an alloy consisting mostly of iron, with a carbon content between 0.2% and 2.1% byweight. An increasing amount of Iron will result in which of the following?
  • Increase Hardening
  • Decrease Hardening
  • Increase ductility
  • Increase melting Point
Answer: Increase Hardening
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