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Is Alcl3 Electron Deficient

Yes, aluminium chloride (AlCl3) is electron deficient because if we look at its electronic configuration (1s22s22p63s23p1) it has got only 6... View Article

Are Magnets Man Made

Magnets can be both manmade and found in nature. Yes, there are natural magnets that are also found in the earth’s crust. They are usually found... View Article

Is Oxygen Paramagnetic Or Diamagnetic

Oxygen is paramagnetic mainly because it consists of two unpaired electrons in its last molecular orbital. This can be proven if we look at the... View Article

Which Is More Soluble Alcohol Or Ether

Alcohol is more soluble than ether mainly because if we look at the alcohol group they can act both as a hydrogen bond donor and acceptor.... View Article

Is Rusting Endothermic Or Exothermic

Rusting is an exothermic reaction. It is because the reaction between iron and moist air that produces rust generates lots of heat. However, the... View Article

Which Has Higher Concentration Of Hplus Ions 1m Hcl 1m Ch3cooh

1m HCl will have a higher concentration of H+ ions than 1m of CH3COOH. This is because of one simple reason - the acidity of the compounds. HCl... View Article

Why Does Zinc Only Form A 2 Ion

Zinc can only form only 2+ (positively charged cations) ions mainly because it has the ability to lose or shed the two electrons in its 4s... View Article

Can Halogens Bond With Each Other

Yes, halogens can react and form bonds with other halogens. When they react together they tend to form interhalogen compounds containing two or... View Article

If A And B Represents The Adjacent Sides Of A Parallelogram Whose Area Is 15 Units Then The Area

1) 45 units 2) 75 units 3) 105 units 4) 165 units Answer: (3) 105 units Solution: Given, if a and b are two adjacent sides of a... View Article

The Vectors A And B Are Not Perpendicular And C And D Are Two Vectors Satisfying B C B D

Answer: (3) c-((a.c)/(a.d))b Solution: The vectors a and b are not perpendicular So, a.b≠0 Given, a.d = 0 b × c = b × d a x (b x c) =... View Article

If A B2 A B2 144 And A 4 Then B Is Equal To

1) 16 2) 8 3) 3 4) 12 Answer: (3) 3 Solution: Given, |a × b|2 + |a ∙ b|2 = 144 Suppose, If angle between a and b is θ, then,... View Article

If A And B Are Vectors Such That A B 29 And A 2i 3j 4k 2i 3j 4k B A Possible Value Of A

1) 0 2) 3 3) 4 4) 8 Answer: (3) 4 Solution: Given, a × (2i + 3j + 4k) = (2i + 3j + 4k) × b a x (2i + 3j + 4k) = -b x (2i + 3j + 4k) (a+b)... View Article

If A B And C Are Three Vectors Such That A B C And B C A Then

1) a ≠ b ≠ c 2) a = b = c 3) a ≠ b ≠ c ≠ 1 4) a, b and c are orthogonal in pairs Answer: 4) a, b and c are orthogonal in pairs Solution: a... View Article

In A Triangle With Vertices A 1 1 2 B5 6 2 And C1 3 1 Find The Altitude N Bd

1) 5 2) 10 3) 5√2 4) 10/√2 Answer: (1) 5 Solution: Given, a triangle with vertices A (1, –1, 2), B(5, –6, 2) and C(1, 3, –1) BD is the... View Article

A B 5 And The Angle Between A And B Is Pi 4 The Area Of The Triangle Constructed On The Vectors A 2b And 3a 2b Is

1) 50 2) 50√2 3) 50/√2 4) 100 Answer (2) 50√2 Solution: Suppose, Area of triangle = ½ (a-2b) x (3a+2b) = (−6(b×a)+2(a×b)) = 8(axb)/2 =... View Article

Let Vector A I 2j K And Vector B I J K Be Two Vectors If Vector C Is A Vector Such That B X C B X A

(1) ½ (2) -1 (3) -½ (4) -3/2 Answer: (3) = -½ Solution: Given, a = i - 2j + k and vector b = i - j + k |a| = √6 |b| = √3 a.b = 4 Now as... View Article

If A B And C Are Unit Vectors Such That Abc0 Then Which Of The Following Is Correct

1) a × b = b × c = c × a = 0 2) a × b = b × c = c × a ≠ 0 3) a × b = b × c = a × c = 0 4) a × b , b × c , c × a mutually perpendicular... View Article

If A I2j2k B 5 And The Angle Between Vector A And B Is Pi6 Then The Area Of The Triangle

1) 15/4 2) 15/2 3) 15 4) 15√3/2 5) 15√3 Answer: (1) 15/4 Solution: Area of triangle = ½ ∣a×b∣ Area = ½ |a||b|sinθ = ½ [3 x 5 x sin π/6]... View Article

If A 1 B 4 Ab 2 And C 2a B 3b Then The Angle Between B And C Is

1) π/6 2) 5π/6 3) π/3 4) 2π/3 Answer: (2) 5π/6 Solution: Given, |a|= 1, |b| = 4, a.b = 2 and c = 2a × b – 3b |a×b|2 = |a|2+|b|2-2(a.b)2... View Article

The Unit Vector Perpendicular To The Vectors Ij And Ij Forming A Right Handed System Is

1) k 2) -k 3) (i+j)/√2 4) (i-j)/√2 Answer: (1) k Solution: Let the unit vector perpendicular to the vectors i-j and i+j is r. Vector r =... View Article

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