Which of the following option w.r.t. increasing bond order is correct ?
NO < C2 <O2- <He2+
C2 < NO < He2+ < O2-
He2+ < O2- < NO < C2
He2+ < O2- < C2 < NO.
Which of the following is a characteristic of a reversible reaction?
It never proceeds to completion
It can be influenced by a catalyst
It proceeds only in forward direction
Number of moles of reactants and products are equal.
B.
It can be influenced by a catalyst
Reversible reactions are those reaction in which there is equilibrium established at every infinitesimal step. But the rate of forward and rate of backward reaction can be influenced (or speed up) by the use of catalyst.
How many litres of ammonia gas at S.T.P. would 1 be needed to prepare 100 ml of 2.5 M ammonium hydroxide solution?
5.6 L
0.056 L
11.2 L
0.56 L
The equilibrium constant of a reaction is 300. If the volume of a reaction flask is trippled, the equilibrium constant will be
300
100
600
150
Which of the following is the correct sequence of atomic weights of the given elements?
Ni> Co> Fe
Fe> Co> Ni
Co> Fe> Ni
Co> Ni> Fe
A solution with pH = 2 is more acidic than one with a pH =6, by a factor of
4000
5000
8000
10,000
The BCl3, is a planar molecule where as NCl3, is pyramidal. because
B-Cl bond is more polar than N-Cl bond
N-Cl bond is more covalent than B-Cl bond
nitrogen atom is smaller than boron atoms
BCl3 has no lone pair but NCl3 has a lone pair of electrons.
If 0.189 g of a chlorine containing organic compound gave 0.287 g of silver chloride, then the percentage of chlorine in the organic compound is
35.47
35.57
37.57
45.37