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Chemistry MCQs

216 Questions Subject Test
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Atomic StructureChemical BondingReactionsOrganic Chemistry
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Medium ppsc Uploaded: 04 Sep 2026

What is the hybridization of carbon in ethyne (C2H2)?

  • A sp
  • B sp3
  • C sp3d
  • D sp2
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Medium css Uploaded: 07 Aug 2026

What is the SI unit of amount of substance?

  • A Mole
  • B Litre
  • C Gram
  • D Kilogram
43
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the chemical formula for nitric acid used in fertiliser and explosive manufacturing?

  • A H2SO4
  • B HCl
  • C H3PO4
  • D HNO3
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Medium css fpsc ppsc Uploaded: 14 Jul 2026

Which organic functional group is present in alcohols?

  • A Carbonyl group
  • B Hydroxyl group
  • C Carboxyl group
  • D Amino group
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Medium fpsc Uploaded: 07 Aug 2026

What is the term for the amount of solute dissolved in a given amount of solvent?

  • A Solubility
  • B Density
  • C Molarity
  • D Concentration
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Medium nts Uploaded: 04 Sep 2026

Which layer of the atmosphere contains the ozone layer that protects Earth from UV radiation?

  • A Stratosphere
  • B Thermosphere
  • C Troposphere
  • D Mesosphere
47
Medium fpsc ppsc nts Uploaded: 14 Jul 2026

What is the name of the vertical columns in the periodic table?

  • A Periods
  • B Blocks
  • C Groups
  • D Rows
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Medium nts Uploaded: 04 Sep 2026

What is the chemical formula for ethanol?

  • A CH3OH
  • B CH3COOH
  • C C2H5OH
  • D C2H6
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Medium css fpsc ppsc Uploaded: 14 Jul 2026

Which process converts vegetable oils into solid fats by adding hydrogen in the presence of a nickel catalyst?

  • A Saponification
  • B Hydrogenation
  • C Esterification
  • D Fermentation
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Medium ppsc Uploaded: 06 Aug 2026

Which element is commonly used in nuclear reactors as fuel?

  • A Uranium
  • B Carbon
  • C Lead
  • D Silicon
51
Medium nts Uploaded: 07 Aug 2026

What is the electronic configuration of Neon (2-8-2)?

  • A 2-2-8
  • B 2-8
  • C 2-8-8
  • D 2-6-2
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Medium pms Uploaded: 04 Sep 2026

Which gas is used in the Haber process to produce ammonia along with nitrogen?

  • A Chlorine
  • B Hydrogen
  • C Carbon dioxide
  • D Oxygen
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Medium css fpsc ppsc Uploaded: 14 Jul 2026

Which indicator is colourless in acidic solution and pink in alkaline solution?

  • A Litmus
  • B Methyl orange
  • C Universal indicator
  • D Phenolphthalein
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Medium pms Uploaded: 07 Aug 2026

Which element is primarily used in nuclear power plants as fuel?

  • A Uranium
  • B Thorium
  • C Radium
  • D Plutonium
55
Medium fpsc Uploaded: 04 Sep 2026

What is the electron configuration of Neon?

  • A 1s2 2s1 2p6
  • B 1s2 2s2 2p6
  • C 1s2 2s2 2p4
  • D 1s2 2s2 2p5
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Medium css fpsc ppsc Uploaded: 14 Jul 2026

Which chemical process is used to extract metals from their ores using carbon or electrolysis?

  • A Reduction
  • B Oxidation
  • C Neutralisation
  • D Chromatography
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Medium nts Uploaded: 04 Sep 2026

Which of the following is classified as a homogeneous mixture?

  • A Sand and water
  • B Saltwater solution
  • C Granite rock
  • D Oil and water
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Medium css Uploaded: 07 Aug 2026

What is the process of adding electrons in a redox reaction called?

  • A Oxidation
  • B Reduction
  • C Ionization
  • D Neutralization
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Medium css Uploaded: 04 Sep 2026

What is a buffer solution?

  • A Only basic
  • B Resists change in pH
  • C Always neutral
  • D Only acidic
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Medium fpsc ppsc nts Uploaded: 05 Aug 2026

What gas is produced when calcium carbonate is heated strongly in thermal decomposition?

  • A Oxygen
  • B Sulfur dioxide
  • C Carbon dioxide
  • D Carbon monoxide
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