Class 11th

Arrange the following on the increasing order of acidic hydrogen.

The concentration-time dependence for a 1^st order reaction is as shown in the graph: At which point on the curve, the rate of reaction is fastest?

Structures I & II are:

How would you expect the bond strength to change in the series  C₂ to C₂ to C^-2₂  ?

The pollutants which come directly in the air from sources are called primary pollutants. Primary pollutants are sometimes converted into secondary pollutants. Which of the following belongs to secondary air pollutants?

What will be the name of atomic number 114 according to the IUPAC nomenclature and its symbol respectively is:

|z - i| = Im(z) represents a conic with foci (α,β) then α + β = ______. a conic with foci (α,β) then α + β = ______.

(1 + 2x + 3x² + 4x³ + .)?² = a? + a?x + a?x² + .a?x?. Then |a? - a?| = ______.

Number of three digit numbers that can be formed by digits 1,2,3,4,5,6,7,8,9 such that number is divisible by 3. (Repetition of digits allowed) ______.

Force required to separate two glass plates of area 100cm² with a thin film of water 0.05 cm thick between them is____. (in N). (Surface tension of water is 70x10^-3N / m , consider complete wetting)