Practice Chemistry Questions and Answers

• The green colour of the leaves is due to-
• The IUPAC name of the compound CH₃ -CH₂ -CH₃ is-
• Which of the following colour of white light has the maximum wavelength?
• What is the physical state of water at 250⁰ C?
• The elements with atomic numbers 10, 18, 36, 54 are-
• What is the molecular formula of chloroform?
• A substance X turns the colour of red litmus blue, and it will change methyl orange-
• Which of the following is a non-metal?
• Which of the following statements about the modern periodic table is NOT correct?
• Which of the following pollutants is the major contributor to photochemical smog?
• What is the chemical name of quick lime?
• Which of the following fatty acids does NOT form soap?
• What are antibiotics?
• Which of the following is acidic in nature?
• Which substance is present in green leaves to help in the process of photosynthesis?
• _____________ has the maximum attraction force between the molecules.
• Based on the periodic trends for ionization energy, which element has the highest ionization energy?
• Which of the following is polyatomic?
• What is the colour of base?
• Repetition of sound produced by reflection of sound waves is called-
• When copper sulphate solution reacts with iron metal, copper metal is formed. Which of the following reactions is this?
• What did Archimedes determine after discovering the Archimedes principle?
• Which of the following is used in alcoholic drinks?
• What is the atomicity of Helium?
• Atomic number of an element is equal to the number of ____ in the nucleus.
• Which of the following metals is the lightest in the periodic table of elements?
• Which of the following is NOT a base?
• Which of the following component imparts green colour to leaves?
• What is the chemical formula of bleaching powder?
• Which material is used as a moderator in a nuclear power plant that slows down the neutrons and makes them fit for causing fission?
• Which of the following reactions is commonly used in the hydrogenation of vegetable oils using a nickel catalyst?
• Which catalyst is used in the hydrogenation of vegetable oils to make ghee?
• Sylvine is a mineral ore of which element?
• Which gas is primarily used in the filling of incandescent light bulbs?
• Which vitamin is water-soluble?
• Which substance is commonly used as a glassware cleaning reagent in laboratories?
• What is the common name for Calcium Sulfate Dihydrate?
• What causes the black color of Black Soil?
• Which material is not classified as a metalloid?
• The Biuret test is used to detect the presence of which substance?