General Knowledge
CHEMISTRY MCQs
Total Questions : 1203
| Page 5 of 121 pages
Answer: Option D. -> Water vapour
The primary greenhouse gases in the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone. When these gases are ranked by their direct contribution to the greenhouse effect in percentage terms, the most important are: Water vapour: 36-72 per cent; Carbon dioxide: 9-26 per cent; Methane: 4-9 per cent; and Ozone: 3-7 per cent.
The primary greenhouse gases in the Earth's atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone. When these gases are ranked by their direct contribution to the greenhouse effect in percentage terms, the most important are: Water vapour: 36-72 per cent; Carbon dioxide: 9-26 per cent; Methane: 4-9 per cent; and Ozone: 3-7 per cent.
Answer: Option C. -> Carbon dioxide
Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities.
Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities.
Answer: Option A. -> Suspended solid particles in air
An aerosol (abbreviation of "aero-solution") is a suspension of fine solid particles or liquid droplets in air or another gas.
An aerosol (abbreviation of "aero-solution") is a suspension of fine solid particles or liquid droplets in air or another gas.
Answer: Option D. -> Radioactive waste
The Chernobyl accident in 1986 was the result of a flawed reactor design that was operated with inadequately trained personnel. The resulting steam explosion and fires released at least 5% of the radioactive reactor core into the environment, with the deposition of radioactive materials in many parts of Europe.
The Chernobyl accident in 1986 was the result of a flawed reactor design that was operated with inadequately trained personnel. The resulting steam explosion and fires released at least 5% of the radioactive reactor core into the environment, with the deposition of radioactive materials in many parts of Europe.
Answer: Option A. -> Nitrous oxide
Nitrous oxide is produced by combustion of fossil fuels, livestock wastes, breakdown of nitrogenous fertilizers in soil, nitrate contaminated water, nylon production and other industrial processes.
Nitrous oxide is produced by combustion of fossil fuels, livestock wastes, breakdown of nitrogenous fertilizers in soil, nitrate contaminated water, nylon production and other industrial processes.
Answer: Option D. -> Glucose
Answer: Option D. -> N-heptane
Octane rating or octane number is a standard measure of the performance of a motor or aviation fuel. The higher the octane number, the more compression the fuel can withstand. Isooctane (upper) has an octane rating of 100 whereas n-heptane has an octane rating of 0.
Octane rating or octane number is a standard measure of the performance of a motor or aviation fuel. The higher the octane number, the more compression the fuel can withstand. Isooctane (upper) has an octane rating of 100 whereas n-heptane has an octane rating of 0.
Answer: Option C. -> Nickel
Nickel-based super alloys are an unusual class of metallic materials with an exceptional combination of high temperature strength, toughness, and resistance to degradation in corrosive or oxidizing environment. These materials are widely used in aircraft and power-generation turbines, rocket engines, etc.
Nickel-based super alloys are an unusual class of metallic materials with an exceptional combination of high temperature strength, toughness, and resistance to degradation in corrosive or oxidizing environment. These materials are widely used in aircraft and power-generation turbines, rocket engines, etc.
Answer: Option B. -> Calamine
Among the following, carbonate ore of Zinc is Calamine.
Among the following, carbonate ore of Zinc is Calamine.
Answer: Option A. -> Shorter
Double bonds are shorter than single bonds because p-orbital overlap is maximized.
Double bonds are shorter than single bonds because p-orbital overlap is maximized.
Latest Videos
Latest Test Papers
Login With Google
Old way of Login
Login With Email