Chemistry-
General
Easy

Question

STATEMENT EXPLANATION Although P F subscript 5 end subscript comma P C l subscript 5 end subscript andPhosphorus has P B r subscript 5 end subscript are known, thelower pentahalides of nitrogenelectronegativity have not been observedthan nitrogen.electronegativity

  1. Both S and E are true, and E is the correct explanation of S    
  2. Both S and E are true, but E is; not the correct explanation of S    
  3. S is true but E is false    
  4. S is false but E is true    

The correct answer is: Both S and E are true, but E is; not the correct explanation of S

Related Questions to study

General
chemistry-

Write the missing product in the following reaction–4 H N O subscript 3 plus P subscript 4 O subscript 10 rightwards arrow 4 H P O subscript 3

Write the missing product in the following reaction–4 H N O subscript 3 plus P subscript 4 O subscript 10 rightwards arrow 4 H P O subscript 3

chemistry-General
General
chemistry-

In phosphorus estimation, the compound Mg NH4PO4 is converted on ignition to–

In phosphorus estimation, the compound Mg NH4PO4 is converted on ignition to–

chemistry-General
General
Maths-

If scriptbase P subscript r end scriptbase presuperscript 8 equals to the power of 8 P subscript left parenthesis r plus 1 right parenthesis then r is :

G i v e n space to the power of 8 P subscript r equals blank to the power of 8 P subscript open parentheses r plus 1 close parentheses end subscript
rightwards double arrow fraction numerator 8 factorial over denominator open parentheses 8 minus r close parentheses factorial end fraction equals fraction numerator 8 factorial over denominator open parentheses 8 minus r minus 1 close parentheses factorial end fraction
rightwards double arrow fraction numerator 1 over denominator open parentheses 8 minus r close parentheses factorial end fraction equals fraction numerator 1 over denominator open parentheses 7 minus r close parentheses factorial end fraction
rightwards double arrow open parentheses 7 minus r close parentheses factorial equals open parentheses 8 minus r close parentheses factorial
rightwards double arrow open parentheses 7 minus 7 close parentheses factorial equals open parentheses 8 minus 7 close parentheses factorial space space space space space open square brackets 0 factorial equals 1 space a n d space 1 factorial equals 1 close square brackets
rightwards double arrow r equals 7

If scriptbase P subscript r end scriptbase presuperscript 8 equals to the power of 8 P subscript left parenthesis r plus 1 right parenthesis then r is :

Maths-General
G i v e n space to the power of 8 P subscript r equals blank to the power of 8 P subscript open parentheses r plus 1 close parentheses end subscript
rightwards double arrow fraction numerator 8 factorial over denominator open parentheses 8 minus r close parentheses factorial end fraction equals fraction numerator 8 factorial over denominator open parentheses 8 minus r minus 1 close parentheses factorial end fraction
rightwards double arrow fraction numerator 1 over denominator open parentheses 8 minus r close parentheses factorial end fraction equals fraction numerator 1 over denominator open parentheses 7 minus r close parentheses factorial end fraction
rightwards double arrow open parentheses 7 minus r close parentheses factorial equals open parentheses 8 minus r close parentheses factorial
rightwards double arrow open parentheses 7 minus 7 close parentheses factorial equals open parentheses 8 minus 7 close parentheses factorial space space space space space open square brackets 0 factorial equals 1 space a n d space 1 factorial equals 1 close square brackets
rightwards double arrow r equals 7
parallel
General
chemistry-

Solid P C I subscript 5exists as–

Solid P C I subscript 5exists as–

chemistry-General
General
maths-

The coefficient of x to the power of n in fraction numerator 1 over denominator left parenthesis 1 minus x right parenthesis left parenthesis 1 minus 2 x right parenthesis left parenthesis 1 minus 3 x right parenthesis end fraction is

The coefficient of x to the power of n in fraction numerator 1 over denominator left parenthesis 1 minus x right parenthesis left parenthesis 1 minus 2 x right parenthesis left parenthesis 1 minus 3 x right parenthesis end fraction is

maths-General
General
physics-

Statement I Two particles moving in the same direction do not lose all their energy in a completely inelastic collision.

Statement II Principle of conservation of momentum holds true for all kinds of collisions.

Statement I Two particles moving in the same direction do not lose all their energy in a completely inelastic collision.

Statement II Principle of conservation of momentum holds true for all kinds of collisions.

physics-General
parallel
General
maths-

The coefficient of x to the power of n in fraction numerator x minus 4 over denominator x squared minus 5 x plus 6 end fraction is

The coefficient of x to the power of n in fraction numerator x minus 4 over denominator x squared minus 5 x plus 6 end fraction is

maths-General
General
chemistry-

(Me)2SiCl2 on hydrolysis will produce -

left parenthesis M e right parenthesis subscript 2 end subscript S i C l subscript 2 end subscript stack ⟶ with H subscript 2 end subscript O on top open square brackets negative O minus left parenthesis M e right parenthesis subscript 2 end subscript S i minus O minus close square brackets subscript n end subscript
Silicone

(Me)2SiCl2 on hydrolysis will produce -

chemistry-General
left parenthesis M e right parenthesis subscript 2 end subscript S i C l subscript 2 end subscript stack ⟶ with H subscript 2 end subscript O on top open square brackets negative O minus left parenthesis M e right parenthesis subscript 2 end subscript S i minus O minus close square brackets subscript n end subscript
Silicone
General
maths-

The coefficient of  x to the power of n in fraction numerator left parenthesis 1 plus x right parenthesis left parenthesis 1 plus 2 x right parenthesis left parenthesis 1 plus 3 x right parenthesis over denominator left parenthesis 1 minus x right parenthesis left parenthesis 1 minus 2 x right parenthesis left parenthesis 1 minus 3 x right parenthesis end fraction is

The coefficient of  x to the power of n in fraction numerator left parenthesis 1 plus x right parenthesis left parenthesis 1 plus 2 x right parenthesis left parenthesis 1 plus 3 x right parenthesis over denominator left parenthesis 1 minus x right parenthesis left parenthesis 1 minus 2 x right parenthesis left parenthesis 1 minus 3 x right parenthesis end fraction is

maths-General
parallel
General
Chemistry-

(Me)2SiCl2 on hydrolysis will produce -

(Me)2SiCl2 on hydrolysis will produce -

Chemistry-General
General
maths-

fraction numerator 1 over denominator x to the power of 4 plus 1 end fraction equals

fraction numerator 1 over denominator x to the power of 4 plus 1 end fraction equals

maths-General
General
physics-

An elastic string of unstretched length  and force constant  is stretched by a small length . It is further stretched by another small length . The work done in the second stretching is

An elastic string of unstretched length  and force constant  is stretched by a small length . It is further stretched by another small length . The work done in the second stretching is

physics-General
parallel
General
physics-

A shell of mass  moving with velocity  suddenly breaks into 2 pieces. The part having mass  remains stationary. The velocity of the other shell will be

A shell of mass  moving with velocity  suddenly breaks into 2 pieces. The part having mass  remains stationary. The velocity of the other shell will be

physics-General
General
Maths-

If fraction numerator x squared plus 5 x plus 1 over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction equals fraction numerator A over denominator x plus 1 end fraction plus fraction numerator B over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis end fraction plus fraction numerator C over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction then B=

Given,
fraction numerator x squared plus 5 x plus 1 over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction equals fraction numerator A over denominator x plus 1 end fraction plus fraction numerator B over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis end fraction plus fraction numerator C over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction
fraction numerator x squared plus 5 x plus 1 over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction equals fraction numerator A left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis plus B left parenthesis x plus 3 right parenthesis plus C over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction
fraction numerator x squared plus 5 x plus 1 over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction equals fraction numerator A left parenthesis x squared plus 3 x plus 2 x plus 6 right parenthesis plus B left parenthesis x plus 3 right parenthesis plus C over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction
fraction numerator x squared plus 5 x plus 1 over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction equals fraction numerator A x squared plus A 5 x plus A 6 plus B x plus B 3 plus C over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction
fraction numerator x squared plus 5 x plus 1 over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction equals fraction numerator A space x squared plus x left parenthesis 5 A plus B right parenthesis plus 6 A plus 3 B plus C over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction
N o w comma space o n space c o m p a r i n g space b o t h space s i d e s space w e space c a n space s a y space t h a t comma
A equals 1 comma space 5 A plus B equals 5 space space comma space space space space 6 A plus 3 B plus C equals 1
space space space space space space space space space space space rightwards double arrow 5 plus B equals 5 space space space space space space space rightwards double arrow 6 plus 0 plus C equals 1
space space space space space space space space space space space rightwards double arrow B equals 0 space space space space space space space space space space space space space rightwards double arrow C equals negative 5

If fraction numerator x squared plus 5 x plus 1 over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction equals fraction numerator A over denominator x plus 1 end fraction plus fraction numerator B over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis end fraction plus fraction numerator C over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction then B=

Maths-General
Given,
fraction numerator x squared plus 5 x plus 1 over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction equals fraction numerator A over denominator x plus 1 end fraction plus fraction numerator B over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis end fraction plus fraction numerator C over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction
fraction numerator x squared plus 5 x plus 1 over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction equals fraction numerator A left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis plus B left parenthesis x plus 3 right parenthesis plus C over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction
fraction numerator x squared plus 5 x plus 1 over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction equals fraction numerator A left parenthesis x squared plus 3 x plus 2 x plus 6 right parenthesis plus B left parenthesis x plus 3 right parenthesis plus C over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction
fraction numerator x squared plus 5 x plus 1 over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction equals fraction numerator A x squared plus A 5 x plus A 6 plus B x plus B 3 plus C over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction
fraction numerator x squared plus 5 x plus 1 over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction equals fraction numerator A space x squared plus x left parenthesis 5 A plus B right parenthesis plus 6 A plus 3 B plus C over denominator left parenthesis x plus 1 right parenthesis left parenthesis x plus 2 right parenthesis left parenthesis x plus 3 right parenthesis end fraction
N o w comma space o n space c o m p a r i n g space b o t h space s i d e s space w e space c a n space s a y space t h a t comma
A equals 1 comma space 5 A plus B equals 5 space space comma space space space space 6 A plus 3 B plus C equals 1
space space space space space space space space space space space rightwards double arrow 5 plus B equals 5 space space space space space space space rightwards double arrow 6 plus 0 plus C equals 1
space space space space space space space space space space space rightwards double arrow B equals 0 space space space space space space space space space space space space space rightwards double arrow C equals negative 5
General
maths-

The set S : = { 1, 2, 3 .........12} is to be partitioned into three sets A, B, C of equal size. Thus A unionunion C = S, A intersection B = B  C = A intersection C = ϕ. The number of ways to partition S is -

S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
fraction numerator table row 12 end table over denominator table row 4 end table table row 4 end table table row 4 end table end fraction×fraction numerator table row 3 end table over denominator table row 3 end table end fraction = fraction numerator table row 12 end table over denominator left parenthesis table row 4 end table right parenthesis to the power of 3 end exponent end fraction

The set S : = { 1, 2, 3 .........12} is to be partitioned into three sets A, B, C of equal size. Thus A unionunion C = S, A intersection B = B  C = A intersection C = ϕ. The number of ways to partition S is -

maths-General
S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
fraction numerator table row 12 end table over denominator table row 4 end table table row 4 end table table row 4 end table end fraction×fraction numerator table row 3 end table over denominator table row 3 end table end fraction = fraction numerator table row 12 end table over denominator left parenthesis table row 4 end table right parenthesis to the power of 3 end exponent end fraction
parallel

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