Chemistry miscellaneous
- Which of the following is not a natural source of hydrocarbon?
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There are three main natural sources of hydrocarbons: natural gas, petroleum and coal.Mica is a natural occurring mineral that is based on a collection of silicate minerals and composed of varying amounts of potassium, iron, aluminum, magnesium and water. It is widely used in the electrical industry.
Correct Option: D
There are three main natural sources of hydrocarbons: natural gas, petroleum and coal.Mica is a natural occurring mineral that is based on a collection of silicate minerals and composed of varying amounts of potassium, iron, aluminum, magnesium and water. It is widely used in the electrical industry.
- Which of the following acids serves as an electrolyte in a lead storage battery?
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Dilute sulfuric acid (H2SO4) serves as the electrolyte in a lead-acid battery. Dilute sulfuric acid used for lead acid battery has ratio (to water) of 3:1 other components of the battery include: Lead peroxide (PbO2) and Sponge lead (Pb).
Correct Option: A
Dilute sulfuric acid (H2SO4) serves as the electrolyte in a lead-acid battery. Dilute sulfuric acid used for lead acid battery has ratio (to water) of 3:1 other components of the battery include: Lead peroxide (PbO2) and Sponge lead (Pb).
- Which of the following substance’s smell is similar to Ethanoic acid?
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Acetic acid, also known as ethanoic acid, is an organic chemical compound best recognized for giving vinegar its sour taste and pungent smell.Vinegar is roughly 3–9% acetic acid by volume, making acetic acid the main component of vinegar apart from water.
Correct Option: C
Acetic acid, also known as ethanoic acid, is an organic chemical compound best recognized for giving vinegar its sour taste and pungent smell.Vinegar is roughly 3–9% acetic acid by volume, making acetic acid the main component of vinegar apart from water.
- Which of the following is the correct sequence of countries in terms of maximum carbon dioxide emission?
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According to the EDGAR database released by European Commission and Netherlands Environmental Assessment Agency in 2014, China, USA, European Union, India and Russia are the largest emitters of carbon emission (annual CO2 emissions estimates in thousands of CO2 tonnes) across the globe.
Country O2 emissions (kt) in 2014 World 35,669,000 China 10,540,000 United States 5,334,000 European Union 3,415,000 India 2,341,000 Russia 1,766,000 Japan 1,278,000 Germany 767,000 Correct Option: A
According to the EDGAR database released by European Commission and Netherlands Environmental Assessment Agency in 2014, China, USA, European Union, India and Russia are the largest emitters of carbon emission (annual CO2 emissions estimates in thousands of CO2 tonnes) across the globe.
Country O2 emissions (kt) in 2014 World 35,669,000 China 10,540,000 United States 5,334,000 European Union 3,415,000 India 2,341,000 Russia 1,766,000 Japan 1,278,000 Germany 767,000
- Which of the following is used to make light weight, but strong plastic ?
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Polyvinyl chloride (PVC) is a common, strong but lightweight plastic that is used in making tough plastic. It is used for flexible applications such as insulating cables. It is the third-most widely produced synthetic plastic polymer, after polyethylene and polypropylene.
Correct Option: C
Polyvinyl chloride (PVC) is a common, strong but lightweight plastic that is used in making tough plastic. It is used for flexible applications such as insulating cables. It is the third-most widely produced synthetic plastic polymer, after polyethylene and polyprop-ylene.
