Question
Which of the following statements is/are correct?
1.Photochemical smog is formed by the reaction of nitrogen oxides (NOx) and volatile organic compounds (VOCs) in the absence of sunlight. 2.Ground level ozone is the primary constituent of the smog. Select the correct answer using the code given below:Solution
Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities. It tends to occur more often in summer, because that is when we have the most sunlight
The height of a geo-stationary satellite from the Earth's surface is approximately :
Anemometer is used to measure –
The common name of hydrogen peroxide is:
The device which transfer the signal from low resistance region to high resistance region is –
100 gram of ice at 0°C is mixed with 100 gram of water at 80°C. What will be the final temperature of the mixture ?
The (O-H) bond in CH3OH is which type of bond?
Which of the following does not give effervescence with sodium carbonate?
The conversion of hard water into soft water by boiling or adding calcium hydroxide is called:
Sphagnum is an important bryophyte. Consider the following statements about it:
- It is a chief constituent of peat. ...
The colour of neutral litmus solution is
