Which of the following is the general formula for saturated hydrocarbons?
Q. Which of the following is the general formula for saturated hydrocarbons? CnH2n+2 CnH2n - 2 CnH2n+1 CnH2n -1 Answer: CnH2n+2 General For...
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Showing posts with label Answer Key. Show all posts
Showing posts with label Answer Key. Show all posts
Which of the following characteristics is common to hydrogen, nitrogen, oxygen and carbon dioxide?
Q. Which of the following characteristics is common to hydrogen, nitrogen, oxygen and carbon dioxide? They are all diatomic They are all ga...
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Reaction between which of the following two reactants will produce hydrogen gas?
Q. Reaction between which of the following two reactants will produce hydrogen gas? Magnesium and hydrochloric acid Copper and dilute nitri...
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Two reactants in a flask at room temperature are producing bubbles of a gas that run limewater milky. The rectants could be
Q. Two reactants in a flask at room temperature are producing bubbles of a gas that run limewater milky. The rectants could be zinc and hyd...
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The sound will have highest velocity in
Q. The sound will have the highest velocity in Vacuum Air Water Steel Answer: Steel Speed of sound in normal air is 343 m/s. In water the s...
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Graphene is
Q. Graphene is An alloy of carbon Nanostructure of carbon Isotope of carbon None of the above Answer: Nano-structure of carbon. Graphene i...
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Which of the following has the highest velocity?
Q. Which of the following has the highest velocity? Cosmic rays Light Electron Supersonic wave Answer: Light The speed of light in a vacuum...
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Which of the following countries was the largest emitter of CO2 in 2015?
Q. Which of the following countries was the largest emitter of CO2 in 2015? China U.S.A India France Answer: China The statistic reflects t...
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Which pain killer given to cattle is responsible for near extinction of vultures in India?
Q. Which painkiller given to cattle is responsible for near extinction of vultures in India? Ibuprofen Acetaminophen Asprin Diclofenac Answ...
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Which of the following is the main component of the natural gas?
Q. Which of the following is the main component of the natural gas? Ethane Butane Carbon mono-oxide Methane Answer: Methane Natural gas is...
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What is ‘Green House Effect’?
Q. What is ‘Green House Effect’? Increase in global temperature Decrease in global temperature Increase in seawater temperature Increase in...
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Incinerators are used for which of the following?
Q. Incinerators are used for which of the following? Burning wastes Putting wastes into them For cutting green trees For making fertilizers...
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Which is the most stable ecosystem?
Q. Which is the most stable ecosystem? Marine (ocean) Forest Mountain Desert Answer: Marine (Ocean) An ecosystem is a community made up of l...
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When was India’s first National Action Plan on Climate Change released?
Q. When was India’s first National Action Plan on Climate Change released? 2000 2008 2012 2015 Answer: 2008 Climate change is one of the mo...
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Which of the following reprsents the decibal level of the rustling of tree leaves in normal circumstance?
Q. Which of the following represents the decibel level of the rustling of tree leaves in normal circumstance? 10 db 20 db 60 db 100 db Answ...
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Which of the following is NOT obtained from insects?
Q. Which of the following is NOT obtained from insects? Silk Honey Lac Pearl Answer: Pearl Silk that is made by the silk worm is made up of...
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In which of the following ecosystems the species diversity is relatively higher?
Q. In which of the following ecosystems the species diversity is relatively higher? Deep Sea Tropical rainforest Coral reefs Desert Answer:...
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Which among the following is the secondary pollutant?
Q. Which among the following is the secondary pollutant? Smog Carbon dioxide Carbon mono-oxide Fly ash Answer: Smog Secondary pollutant for...
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According to the UN Department of Economic and Social Affairs (UN-DESA) what percentage of world’s total population is currently living in urban areas?
Q. According to the UN Department of Economic and Social Affairs (UN-DESA) what percentage of world’s total population is currently living ...
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The Head Quarters of the ‘Green Peace International’ is located at
Q. The Head Quarters of the ‘Green Peace International’ is located at Amsterdam Canberra Ottawa Nagasaki Answer: Amsterdam Greenpeace is a...
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