Category: Chemistry GK MCQ

Q1. What is the primary source of carbon dioxide (CO2) emissions contributing to greenhouse gas emissions?a) Industrial processesb) Deforestationc) Transportationd) Agriculture Q2. Which activity is a major contributor to methane (CH4) emissions, a potent greenhouse gas?a) Miningb) Livestock farmingc) Renewable energy productiond) Waste management Q3. What is a significant cause of nitrous oxide (N2O) emissions, […]

Q1. How is a mineral or earthy substance extracted from ore through the process of smelting?a) By crushing and grinding the ore into fine particlesb) By heating the ore to high temperatures in the presence of reducing agentsc) By dissolving the ore in a solvent to separate the desired substanced) By subjecting the ore to

Q1. What is the primary greenhouse gas responsible for global warming?a) Carbon dioxide (CO2)b) Methane (CH4)c) Nitrous oxide (N2O)d) Chlorofluorocarbons (CFCs) Q2. Which of the following is a major consequence of global warming?a) Melting of polar ice capsb) Decrease in sea levelsc) Expansion of polar ice capsd) Reduction in extreme weather events Q3. What is

Q1. Which chemical compound is commonly used as a disinfectant for water purification and sanitation purposes?a) Sodium chlorideb) Sodium hypochloritec) Sodium hydroxided) Sodium carbonate Q2. Which chemical compound is used as an antacid to relieve heartburn and indigestion?a) Sodium bicarbonateb) Calcium carbonatec) Magnesium hydroxided) Aluminum hydroxide Q3. Which chemical compound is commonly used as a

Q1. How does increasing the concentration of a solute affect its solubility in a solvent?a) Solubility increasesb) Solubility decreasesc) Solubility remains unchangedd) Solubility may increase or decrease depending on the solute-solvent interaction Q2. What happens to the solubility of a gas in a liquid when the pressure of the gas above the liquid increases?a) Solubility

Q1. Which of the following metals is the most abundant element in the Earth’s crust?a) Ironb) Aluminumc) Copperd) Zinc Q2. Which metal is known for its exceptional conductivity of electricity and is commonly used in electrical wiring and transmission lines?a) Aluminumb) Silverc) Copperd) Gold Q3. Which metal is primarily used as a structural material in

Q1. Which non-metal is a colorless, odorless, and tasteless gas that makes up approximately 78% of Earth’s atmosphere?a) Oxygenb) Nitrogenc) Hydrogend) Carbon dioxide Q2. Which non-metal is a yellowish-brown, pungent gas with the chemical formula SO2 and is produced primarily by the burning of fossil fuels?a) Oxygenb) Sulfur dioxidec) Hydrogen sulfided) Nitrogen dioxide Q3. Which

Q1. Which of the following is a commonly mined ore of iron?a) Bauxiteb) Hematitec) Galenad) Magnetite Q2. Which mineral is primarily composed of calcium carbonate and is commonly used in the production of cement, mortar, and lime?a) Quartzb) Gypsumc) Calcited) Feldspar Q1. Which of the following is not a source of Ancient Indian history?a) Inscriptionsb)

Q1. What does the pH scale measure?a) Temperatureb) Acidity or alkalinityc) Pressured) Density Q2. Which of the following substances would have a pH value below 7?a) Lemon juiceb) Baking soda solutionc) Soap solutiond) Milk Q3. What does a pH value of 7 indicate on the pH scale?a) Strong acidityb) Strong alkalinityc) Neutralityd) Weak acidity Q4.

Q1. Which of the following organic compounds is commonly known as the building block of life?a) Glucoseb) Ethanolc) Methaned) Benzene Q2. Which organic compound is commonly used as a solvent, disinfectant, and antiseptic in various industries and applications?a) Ethanolb) Methanolc) Acetoned) Formaldehyde Q3. Which organic compound is the primary component of natural gas and is