If S Is The Sum Of An Infinite Gp The First Term A Then The Common Ratio R Given By
(1) (a-s)/s (2) (s-a)/s (3) a/(1-s) (4) (s-a)/a Solution: The sum of an infinite GP, s = a/(1-r) s(1-r) =... View Article
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The Sum To Infinity Of The Progression 9 3 1 1 By 3 Is
(1) 9 (2) 9/2 (3) 27/4 (4) 15/2 Solution: Given series is a GP. Here a = 9 r =... View Article
If A B C Are In Gp Then Which Is Correct
(1) a2, b2, c2 are in G.P (2) a2(b + c), c2(a + b), b2(a + c) are in G.P... View Article
The Gm Of The Numbers 3 3 Sq 3 Cube 3n Is
(1) 32/n (2) 3(n+1)/2 (3) 3n/2 (4) 3(n-1)/2 Solution: GM of 3, 32, 33….3n = (3 × 32 ×…3n)1/n =... View Article
If G Is The Geometric Mean Of X And Y Then 1 By G2 X2 Plus 1 By G2 Y2 Eq
(1) G2 (2) 1/G2 (3) 2/G2 (4) 3G2 Solution: Since G is the geometric mean of x and y G2... View Article
If N Geometric Means Be Inserted Between A And B Then The Nth Geometric Mean Will Be
(1) a(b/a)n/(n-1) (2) a(b/a)(n-1)/n (3) a(b/a)n/(n+1) (4) a(b/a)1/n Solution: When n GMs inserted between a and b, then the series... View Article
The Product Of N Positive Numbers Is Unity Their Sum Is
(1) A positive integer (2) Equal to n + 1/n (3) Divisible by n (4) Never less than n Solution:... View Article
The Solution Of The Equation 1 Plus A Plus A Sq Plus Ax Eq 1 A 1 A2 1 A4 Then X Is Equal To
(1) 3 (2) 5 (3) 7 (4) None of these Solution: Given 1 + a + a2 + a3 +... View Article
The Sum Of N Terms Of The Following Series 1 1plus X 1 Plus X Plus X Sq
(1) (1-xn)/(1-x) (2) x(1-xn)/(1-x) (3) [n(1-x) – x(1-xn)]/(1-x)2 (4) None of these Solution: Let S = 1 + (1+x) +... View Article
Why Are Ethers Good Solvents
Ethers are generally considered as good solvents primarily because of its ability to accept H-bonds and combine with the London... View Article
Does Hydrogen Bromide Decompose On Heating
Yes, hydrogen bromide can decompose when heated only to produce corrosive and/or toxic fumes. Hydrogen bromide gas has a pungent... View Article
Can Magnets Interact Without Touching
Yes, magnets can certainly interact without touching. Besides, magnets emit forces that are basically non-contact forces. With it, magnets can... View Article
What Can Potassium Dichromate Do To Humans And The Environment
Potassium dichromate is usually considered as a carcinogen and can have some adverse effects on humans as well as the... View Article
Is Alodine Dangerous
Yes, alodine is a dangerous compound and should be handled carefully. Here are some of the effects of this chemical... View Article
Why Is Salt Water So Corrosive
Saltwater is a corrosive compound and can cause rusting of metals at a faster rate mainly because it is an... View Article
Why Can Sulfur Bond 6 Times
Sulfur can form 6 bonds mainly due to its expanded valence shell. To elaborate, it can use its low lying... View Article
What Is Pyramidal In Chemistry
In Chemistry, a pyramidal basically refers to the molecular geometry or in simple words the shape of compounds including the... View Article
Which Is More Ionic Mno Or Mn2o7
MnO is usually more ionic than Mn2O7. It is more ionic because it has a lower magnitude positive charge. Additionally,... View Article
What Happens When Gas Is Cooled
There are several things that can happen when a gas is cooled. Some of them are as follows; There is... View Article
11 Jan 2021: UPSC Exam Comprehensive News Analysis
11 Jan 2021 CNA:- Download PDF Here TABLE OF CONTENTS A. GS 1 Related B. GS 2 Related POLITY AND... View Article
