\(\mathrm{CuSO}_4\) is colorless but \(\mathrm{CuSO}_4 \cdot 5 \mathrm{H}_2 \mathrm{O}\) is blue in color. Which of the following statements is incorrect about the color of \(\mathrm{CuSO}_4 \cdot 5 \mathrm{H}_2 \mathrm{O}\)?

Arrange the following in the decreasing order of basic strength in aqueous solution :
(A) \(CH_3NH_2\)
(B) \((CH_3)_3N\)
(C) \((CH_3)_2NH\)
(D) \(NH_3\)
(E) \(C_6H_5NH_2\)
Choose the correct answer from the options given below :

Select the correct statements for Hoffmann bromamide degradation reaction:
(A) Used to prepare primary amines
(B) Amides are treated with bromine in aqueous solution.
(C) NaOH is used in this reaction.
(D) HCI is used in this reaction
Choose the correct answer from the options given below:

The reagent(s) used in hydroboration oxidation of propene are
(A) B₂H₆
(B) H₂O
(C) H₂O₂
(D) OH^-
Choose the correct answer from the options given below :

Answer the question on the basis of passage given below :
One of the notable features of the transition element is the great variety of oxidation states it may show in its compounds. The elements which give the greatest number of oxidation states occur in or near the middle of the series. Manganese, for example exhibits all the oxidation states from +2 to +7. The lesser number of oxidation states at the extreme ends is either due to losing or sharing of few electrons (Sc, Ti) or too many d electrons of higher valence. Early in the first series scandium (II) is virtually unknown and titanium (IV) which is more stable than Ti (III) or Ti (II). On the other end, the only oxidation state of zinc is \(+ 2\).
For balancing the given reaction, value of \(x\) will be.
\(4 FeCr_2 O_4+Na_2 CO_3+7 O_2 \longrightarrow x Na_2 CrO_4+2 Fe_2 O_3+8 CO_2\)

Nitrogen in trimethylamine is \No Solution(\mathrm{sp}^3\) hybridized. The C-N-C bond angle is \(108^{\circ}\). The geometry of trimethylamine is

With reference to Arrhenius equation \(k=A e^{-E_a / R T}\)

What is the path difference for destructive interference (if n is an integer)?

A card is picked at random from a pack of 52 playing cards. Given that the picked card is a queen, the probability of this card to be a card of spade is:

"The amines which are soluble in water
(A) Methanamine
(B) Ethanamine
(C) Propanamine
(D) Benzylamine
Choose the correct answer from the options given below:"

Match List I with List II.

LIST I	LIST II
A. Penicillium notatum	I. Ethanol
B. Trichoderma polysporum	II. Citric acid
C. Saccharomyces cerevisiae	III. Antibiotics
D. Aspergillus niger.	IV. Cyclosporin A

Choose the correct answer from the options given below:

The Isomerism shown by \([Cr(C_2O_4)_3]^{3-}\) is:

If the radius of the spherical ball is increasing at the rate of 1 m/sec and the radius of the ball is 3 meter then the volume of the ball is increasing at the rate of