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Frequently Asked IIT-JEE Latest Exam Pattern - IIT-JEE Sample Question with Solutions Page 4

(#M40028119) IIT-JEE QUESTION 2007 Question Keep an EYE

While Fe3+ is stable, Mn3+ is not stable in acid solution because
(A) O2 oxidises Mn2+ to Mn3+ (B) O2 oxidises both Mn2+ and Fe2+ to Fe3+
(C) Fe3+ oxidizes H2O to O2 (D) Mn3+ oxidises H2O to O2

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(#M40027865) IIT-JEE QUESTION 2010 question Keep an EYE

Based on VSEPR theory, the number of 90 degree F – Br – F angles in BrF5 is

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(#M40027817) IIT-JEE QUESTION 2011 question Keep an EYE

Let Tn be the number of all possible triangles
formed by joining vertices of an n-sided regular
polygon. If Tn+1 – Tn = 10 then the value of n is -
(1) 10 (2) 8 (3) 7 (4) 5

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(#M40027993) IIT-JEE QUESTION 2012 question Keep an EYE

Which of the following is correct ?
option
(A) a17 = a16 + a15
(B) c17 = c16 + c15
(C) b17 = b16 + c16
(D) a17 = c17 + b16

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(#M40019724) IIT-JEE QUESTION Keep an EYE

Which of the following pieces of data does not uniquely determine an acute angled triangle ABC(R=circumradius)?
(a). a,sinA,sinB
(b). a,b,c
(c). a,sinB,R
(d). a,sinA,R

Asked In IIT-JEE Chandni Maurya (11 years ago)

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(#M40027357) IIT-JEE QUESTION Unit and Dimension Keep an EYE

If the units of length and force are increased
four times, then the unit of energy will
(A) increase 8 times
(B) increase 16 times
(C) decreases 16 times
(D) increase 4 times

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(#M40027987) IIT-JEE QUESTION 2012 question Keep an EYE

Bleaching powder contains a salt of an oxoacid as one of its components. The anhydride of that oxoacid is
(A) Cl2O (B) Cl2O7 (C) ClO2 (D) Cl2O6

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(#M40027754) IIT-JEE QUESTION Physics Keep an EYE

The wavelength of the first spectral line in the Balmer series of hydrogen atom is 6561 A0. The wavelength
of the second spectral line in the Balmer series of singly-ionized helium atom is
(A) 1215 A0 (B) 1640 A0
(C) 2430 A0 (D) 4687 A0

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(#M40027951) IIT-JEE QUESTION 2012 question Keep an EYE

Which of the following halides react(s) withAgNO3(aq) to give a precipitate that dissolves in Na2S2O3(aq) ?
(A) HCl (B) HF (C)HBr (D)HI

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(#M40027770) IIT-JEE QUESTION 2011 question Keep an EYE

Reduction of the metal centre in aqueous permanganate ion involves
(A) 3 electrons in neutral medium (B) 5 electrons in neutral medium
(C) 3 electrons in alkaline medium (D) 5 electrons in acidic medium

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