A Set Contains 2n 1 Elements The Number Of Subsets Of This Set Containing More Than N Elements Is Equal To
1) 2n-1 2) 2n 3) 2n+1 4) 22n Answer: (4) 22n Solution: Given, a set contains 2n+1 elements Number of... View Article
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There Are N Distinct Points On The Circumference Of A Circle The Number Of Pentagons That Can Be Formed
1) 7 2) 8 3) 15 4) 30 Answer: (2) 8 Solution: Given, there are n distinct points on circumference... View Article
In How Many Ways A Team Of 10 Players Out Of 22 Players Can Be Made If 6 Particular Players
1) 22C10 2) 18C3 3) 12C4 4) 18C4 Answer: (3) 12C4 Solution: Total number of players = 22 10 players... View Article
A Lady Gives A Dinner Party For Six Guests The Number Of Ways In Which They May Be Selected From Among Ten Friends
1) 112 2) 140 3) 164 4) None of these Answer: (2) 140 Solution: Number of guest = 6 Total... View Article
Different Words With The Letters Of The Word Integer Let M1 Be The Number Of Words In Which I And N Are Never Together
1) 30 2) 60 3) 90 4) 180 Answer: (1) 30 Solution: Given, the word INTEGER Total letters = 7... View Article
Number Of Ways In Which The Following Prizes Will Be Given To A Class Of 20 Boys First And Second Mathematics
1) 204 × 192 2) 203 × 193 3) 202 × 194 4) None of these Answer: (1) 204 ×... View Article
The Number Of Triangles Which Can Be Formed By Using The Vertices Of A Regular Polygon Of N 3 Sides Is 220 Then N
1) 8 2) 9 3) 10 4) 11 Answer: (2) 9 Solution: Number of triangle formed with n+3 sides =... View Article
There Are 10 Lamps In A Hall Each One Of Them Can Be Switched On Independentlythe Number Of Ways
1) 102 2) 1023 3) 210 4) 10! Answer: (2) 1023 Solution: A lamp has two choices On or Off... View Article
A Committee Of 12 Is To Be Formed From 9 Women And 8 Men In Which At Least 5 Women Have To Be Included
1) 4784,1008 2) 2702,3360 3) 6062,2702 4) 2702,1008 Answer: (4) 2702,1008 Solution: As per the given question, there are 9... View Article
Is O3 Diamagnetic In Nature
The ozone is diamagnetic, because all of its electrons are paired. O2, by comparison, is paramagnetic, containing two electrons that... View Article
Is An Enzyme Always A Protein
Enzymes are categorised according to the form of reaction catalysed into six categories: Structurally, proteins represent the vast majority of... View Article
What Makes Good Electrophile
A polar aprotic solvent does not substantially bind hydrogen to nucleophiles, which means that the nucleophiles have greater solution independence.... View Article
In Which Block Non Metals Are Found
Non-metals are found in the p−block of the modern periodic table. Non-metals are elements that, by accepting or receiving electrons,... View Article
Which Ion Has Higher Polarising Power
The capacity of a cation to distort an anion is known as its polarisation power, and its polarizability is known... View Article
Why Is Aqua Regia Called Royal Water
Aqua Regia is a nitrohydrochloric acid solution. A 3:1 combination of hydrochloric acid and nitric acid, respectively, comprises the standard... View Article
What Is Positive And Negative Deviation From Raoults Law
Positive deviation from the law of Raoult means that the vapour pressure observed is greater than predicted and occurs when... View Article
Why Hydrogen Ions Cannot Exist Alone
If an electron loses a hydrogen atom, the nucleus (H+) results in a size of 1.5 x 10-3 pm, which... View Article
Can We Use Potassium In Place Of Sodium In Lassaignes Test
Halogens form sodium halide by fusion with sodium metal in an organic compound. Potassium can, technically, be used in place... View Article
Why Do Orbitals Hybridize
As hybridised orbitals are lower in energy compared to their separate, unhybridized counterparts, the hybridization of orbitals is also greatly... View Article
Is Sodium Acidic Or Alkaline
Elemental sodium has a low melting point and is a soft reactive metal. Sodium is the most notable of all... View Article
