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Question 1
Let denote the sum of first terms of an arithmetic progression. If and , then is :
Options:
A)
405B)
390C)
410D)
395Question 2
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R)
Assertion (A) : An aqueous solution of when used for volumetric analysis, its concentration should be checked before the use.
Reason (R) : On aging, solution absorbs atmospheric .
In the light of the above statements, choose the correct answer from the options given below :
Options:
A)
(A) is correct but (R) is not correctB)
(A) is not correct but (R) is correctC)
Both (A) and (R) are correct but (R) is not the correct explanation of (A)D)
Both (A) and (R) are correct and (R) is the correct explanation of (A)Question 3
Given below are two statements:
Statement I : Acceleration due to earth's gravity decreases as you go 'up' or 'down' from earth's surface.
Statement II : Acceleration due to earth's gravity is same at a height 'h' and depth 'd' from earth's surface, if h = d.
In the light of above statements, choose the most appropriate answer from the options given below
Options:
A)
Statement I is correct but statement II is incorectB)
Both Statement I and II are correctC)
Statement I is incorrect but statement II is correctD)
Both Statement I and Statement II are incorrect