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Maths-

General

Easy

Question

In the given figure, p||q and r is transversal to p,q. $text If end text angle 2 colon angle 3 equals 7 colon 3 text then end text angle 4 minus angle 7 equals text ? end text$

42°
52°
62°
72°

hint Hint:

Vertically opposite angles are equal
Corresponding are equal

The correct answer is: 72°

Step 1

$angle 2 space colon angle 3 space equals 7 colon 3 A l s o space angle 2 plus angle 3 space equals 180 space left parenthesis c o m p l e m e n t a r y space a n g l e s right parenthesis L e t space angle 2 space b e space 7 x space a n d angle 3 space b e space 3 x 7 x plus 3 x equals 180 10 x equals 180 x equals 180 divided by 10 x equals 18 angle 2 space equals 7 cross times 18 space space a n d space angle 3 space equals 3 cross times 18 angle 2 space equals 126 space a n d space angle 3 space equals space 54$

$angle 2 equals angle 4 space left parenthesis v e r t i c a l l y space o p p o s i t e space a n g l e s right parenthesis angle 4 space equals 126 A l s o space angle 3 space equals angle 7 space left parenthesis c o r r e s p o n d i n g space a n g l e s space a r e space e q u a l right parenthesis angle 7 space equals 54 angle 4 minus angle 7 space equals 126 minus 54 equals 72$

Related Questions to study

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angle on a straight line is always 180⁰

parallel

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parallel

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parallel

S₁ : Generally square planar complexes show geometrical isomerism but do not exhibit optical isomerism because they do not possess planer of symmetry.
S₂ : $capital delta subscript t end subscript equals fraction numerator 4 over denominator 9 end fraction capital delta subscript 0 end subscript$
S₃ : In octahedral complexes each electron entering the t_2g orbitals stabilizes the complex ion by 0.4 $capital delta subscript 0 end subscript$ and each electron entering the e.gorbital destabilizes the complex by an amount of 0.6 Δ₀.

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chemistry-General

All the following complex show decreases in their weights when placed in a magnetic balance then the group of complexes having tetrahedral geometry is :
i) Ni(CO)₄
ii) K[AgF₄ ]
iii) Na₂ [Zn(CN)₄ ]
iv) K₂ [PtCl₄ ]
v) [RhCl(PPh₃)₃ ]

All the following complex show decreases in their weights when placed in a magnetic balance then the group of complexes having tetrahedral geometry is :
i) Ni(CO)₄
ii) K[AgF₄ ]
iii) Na₂ [Zn(CN)₄ ]
iv) K₂ [PtCl₄ ]
v) [RhCl(PPh₃)₃ ]

chemistry-General

$N i C l subscript 2 end subscript stack stack ⟶ with K C N on top with H C N below$ complex A
$N i C l subscript 2 end subscript stack stack ⟶ with K C l on top with text excess end text below$ complex B
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$N i C l subscript 2 end subscript stack stack ⟶ with K C N on top with H C N below$ complex A
$N i C l subscript 2 end subscript stack stack ⟶ with K C l on top with text excess end text below$ complex B
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The IUPAC name of complexes ‘A’ & ‘B’ are respectively :

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parallel

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chemistry-General

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chemistry-General

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chemistry-General

parallel

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