Question
Which of the following pollutants is the major
contributor to photochemical smog?Solution
Ozone : • Ozone is an allotrope of Oxygen, with molecular formula 03. • It is stabilised by resonance i.e. delocalisation of electrons. • It is a pale blue coloured gas present in our the stratosphere layer. • It protects us from the harmful Ultraviolet Rays coming from the sun. • The chlorofluorocarbons (CFCs) are the ozone-depleting agents originating from Air Conditioners, Refrigerators and Aerosols. • Montreal Protocol was signed on September 16, 1987, for the protection of Ozone, that entered into force on January 1, 1989. • But when Ozone is present at ground level, instead of atmosphere it acts as a pollutant.
Which one of the following statements is INCORRECT with regard to soaking dehusked pulses in water and discarding it before cooking?
The element is found highest in earth crust is:
Which of the following is a fiber and oilseed crop?
According to CRIDA, the depth of deep tillage is ____
Annual felling areas is otherwise called as _________
The bitter taste in brinjal fruit is due to?
Known as a 'wonder crop' for its high nutritional value, particularly its protein content, which legume is widely regarded as an affordable source of pr...
A method of asexual propagation in which a stem is made to produce roots while still attached to the parent plant is calledÂ
Which of the following is not matched correctly?Â
 Interveinal chlorosis with tints of red orange and purple colors are typical deficiency symptoms of__________
