Choose the correct statement for the collision theory of chemical reactions

Which of the following gives the correct order of stability constant in solution?

Presence of nitrate ions can be detected by adding freshly prepared \(\text{FeSO}_4\) solution. Then concentrated \(\text{H}_2\text{SO}_4\) is added along the walls of the test tube.
A brown ring is formed at the interface having the formula \([\text{Fe(H}_2\text{O)}_5\text{(NO)}]^{2+}\.
The oxidation state of Fe in this complex is

In which of one the following all the concentration terms are independent of temperature?

In the depression of freezing point experiment, it is found that :
(A) The vapour pressure of the solution is less than that of the pure solvent.
(B) The vapour pressure of solution is more than that of the pure solvent.
(C) Only the solute molecules solidify at the freezing point.
(D) Only the solvent molecules solidify at the freezing point.
Choose the correct answer from the options given below :

Answer the question on basis of passage given below :
P block elements are placed in groups 13 to 18 of the periodic table. Their valence shell electronic configuration is \(ns^2 np^{1-6}\). Group 16 of the p block elements are known as the group of chalcogens having \(ns^2 np^4\) as their general electronic configuration. They exhibit number of oxidation states but the stability of \(- 2\) oxidation state decreases down the group. They are sometimes also known as group of chalcogens as the name is derived from the Greek word for brass and points to the association of sulphur and its congeners with copper. Their ionisation enthalpy decreases down the group. Oxygen shows anomalous behaviour due to its small size and high electronegativity.
Given below are the Hydrides formed by group 15 elements. Choose the correct decreasing order of basicity of the following hydrides :
(A) \(AsH_3\)
(B) \(PH_3\)
(C) \(NH_3\)
(D) \(BiH_3\)
(E) \(SbH_3\)
Choose the correct answer from the options given below :

The liquid which causes formation of poisonous gas when exposed to sunlight in presence of air or oxygen (\(\text{O}_2\)), is:

A mature embryo sac of an angiosperm is:

Arrange the following acids in increasing order of their acidic strengths: \(HCOOH , FCH _2 COOH , NO _2 CH _2 COOH , ClCH _2 COOH\)

In a n type silicon, which of the following statement is true ?

A galvanometer having a resistance of \(7 \Omega\) is shunted by a resistance of \(3 \Omega\). If the total current is 1 A, the value of current passing through the shunt is

If R and S are two equivalence relations on a set A, then

Two cards are drawn simultaneously from a well shuffled pack of 52 cards. Then variance of the number of kings is: