• Placement Questions
• /
• IIT-JEE

Frequently Asked IIT-JEE Latest Exam Pattern - IIT-JEE Sample Question with Solutions Page 9

(#M40019723) IIT-JEE QUESTION Keep an EYE

Consider an infinite geometric series with the first term a and common ratio r. If its sum is 4 and the second term is 3/4 then (a,r) has the value,
(a). (7/4,3/7)
(b). (2,3/8)
(c). (3/2,1/2)
(d). (3,1/4)

Asked In IIT-JEE Chandni Maurya (12 years ago)

Unsolved Read Solution (4)

Is this Puzzle helpful?   (16)   (22) Submit Your Solution

(#M40027752) IIT-JEE QUESTION Chemistry Keep an EYE

The total number of alkenes possible by dehydrobromination of 3-bromo-3-cyclopentylhexane using
alcoholic KOH is

Asked In IIT-JEE MAN (12 years ago)

Unsolved

Is this Puzzle helpful?   (4)   (3) Submit Your Solution

(#M40027960) IIT-JEE QUESTION 2012 question Keep an EYE

A ship is fitted with three engines E1, E2 and E3. The engines function independently of each other with respective
probabilities 1/2,1/4 and 1/4.For the ship to be operational at least two of its engines must function. Let X
denote the event that the ship is operational and let X1, X2 and X3 denotes respectively the events that the
engines E1 E2 and E3 are functioning.Which of the following is (are) true ?
(a) P[X | X2]= 5/16
b) P[X | X1]=7/16
c)P[X | X1]=3/16
d)P[X | X2]= 5/16

Asked In IIT-JEE MAN (12 years ago)

Unsolved

Is this Puzzle helpful?   (2)   (1) Submit Your Solution

(#M40027911) IIT-JEE QUESTION 2010 question Keep an EYE

The total number of diprotic acids among the following is
H3PO4 H2SO4 H3PO3 H2CO3 H2S2O7
H3BO3 H3PO2 H2CrO4 H2SO3

Asked In IIT-JEE MAN (12 years ago)

Unsolved

Is this Puzzle helpful?   (7)   (8) Submit Your Solution

(#M40027903) IIT-JEE QUESTION 2010 question Keep an EYE

When two identical batteries of internal resistance 1Ω each are connected in series across a resistor R, the
rate of heat produced in R is J1. When the same batteries are connected in parallel across R, the rate is J2. If
J1 = 2.25 J2 then the value of R in Ω is

Asked In IIT-JEE MAN (12 years ago)

Unsolved

Is this Puzzle helpful?   (2)   (0) Submit Your Solution

(#M40027920) IIT-JEE QUESTION 2010 question Keep an EYE

A tiny spherical oil drop carrying a net charge q is balanced in still air with a vertical uniform electric field
of strength 81pie/7* 10^5Vm^–1. When the field is switched off, the drop is observed to fall with terminal
velocity 2 × 10^–3 ms^–1. Given g = 9.8 ms^–2, viscosity of the air = 1.8 × 10^–5 Ns m^–2 and the density of oil =
900 kg m^–3, the magnitude of q is

Asked In IIT-JEE MAN (12 years ago)

Unsolved

Is this Puzzle helpful?   (1)   (0) Submit Your Solution

(#M40028089) IIT-JEE QUESTION Mental Ability Keep an EYE

STATEMENT-1: Boron always forms covalent bond.
because
STATEMENT-2: The small size of B3+ favours formation of covalent bond.
(A) Statement-1 is True, Statement-2 is True; Statement-2 is a correct explanation for Statement-1.
(B) Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.
(C) Statement-1 is True, Statement-2 is True.
(D) Statement-1 is False, Statement-2 is True.

Asked In IIT-JEE MAN (12 years ago)

Unsolved

Is this Puzzle helpful?   (1)   (0) Submit Your Solution

(#M40027985) IIT-JEE QUESTION 2012 question Keep an EYE

For a dilute solution containing 2.5 g of a non- volatile non- electrolyte solute in 100 g of water, the elevation in boiling point at 1 atm pressure is 2ºC. Assuming concentration of solute is much lower than the concentration of solvent, the vapour pressure (mm of Hg) of the solution is (take Kb = 0.76 K kg mol–1)
option
(A) 724
(B) 740
(C) 736
(D)718

Asked In IIT-JEE MAN (12 years ago)

Unsolved

Is this Puzzle helpful?   (4)   (2) Submit Your Solution

(#M40027978) IIT-JEE QUESTION 2012 question Keep an EYE

The reaction of white phosphorous with aqueous NaOH gives phosphine along with another phosphorus
containing compound. The reaction type; the oxidation states of phosphorous in phosphine and the other
product are respectively
(A) redox reaction; – 3 and –5
(B) redox reaction ; 3 and + 5
(C) disproportionation reaction ; – 3 and + 5
(D) disproportionation reaction; – 3 and + 3

Asked In IIT-JEE MAN (12 years ago)

Unsolved

Is this Puzzle helpful?   (2)   (4) Submit Your Solution

(#M40028128) IIT-JEE QUESTION 2007 Question Keep an EYE

The reaction of P4 with X leads selectively to P4O6. The X is
(A) Dry O2 (B) A mixture of O2 and N2
(C) Moist O2 (D) O2 in the presence of aqueous NaOH

Asked In IIT-JEE MAN (12 years ago)

Unsolved

Is this Puzzle helpful?   (2)   (2) Submit Your Solution