If cloud is called white, white is called rain, rain is called green, green is called air, air is called blue, and blue is called water, where do the birds fly is?
(A) Air
(B) Cloud
(C) White
(D) Blue
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When rain is accompanied by a thunderstorm, the collected rain water will have a pH value.
(a) : Due to thunderstorm, temperature increases. As temperature increases, [H+] also increases, hence pH decreases.
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Concentrated hydrochloric acid when kept in open air sometimes produces a cloud of white fumes.
(c) :- HCl gas in presence of moisture in air forms droplets of liquid solution in the form of cloudy smoke.
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The green scum seen in the fresh water bodies is: a. blue green algae
d. both (a) and (c) is correct
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In a box there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither red nor green?
(e) If the drawn ball is neither red nor green, then it must be blue, which can be picked in 7C1 = 7 ways. One ball can be picked from...
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The number of ways in which one or more balls can be selected out of 10 white, 9 green and 7 blue balls is
(d) The required number of ways = (10 +1)(9 +1)(7 +1) -1 = 879.
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Assertion (A):-The PH of acid rain is less than 5.6 Reason (R):-CO2 present in the atmosphere dissolves in rain water and form carbonic acid.
(b) Both A and R are correct and R is not the correct explanation of A.
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Which statement is correct regarding acid rain? I. The term “acid rain” was coined in 1972 by Robert Angus Smith
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If air and cloud were good conductors of electricity, do you think lightning could occur? Explain.
No, it will not occur. The charge separation cannot take place in conductors. Therefore charges will not accumulate on clouds and so lightning cannot take place.
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A bag contains 6 red balls and some blue balls. If the probability of drawing a blue ball the bag is twice that of a red ball,
No of red balls = 6 Let no. of blue balls = x Total no. of possible outcomes = 6 + x(total no. of balls) P(E) = (No.of favorable outcomes)/(Total no.of possible outcomes) P(blue...
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If you have a spinning wheel with 3 green sectors, 1 blue sector and 1 red sector, what is the probability of getting a green sector?
There are five sectors. Three sectors are green out of five sectors. Therefore, probability of getting a green sector = 3/5 There is one blue sector out of five sectors. Non-blue...
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