Which of the following statements are correct?
A. Dry ether is used in Wurtz reaction.
B. Grignard reagent is an example of organo metallic compound
C. Bond clevage of C-Cl is easier in haloarene than haloalkane
D. Chlorobenzene does not show Friedel Crafts reaction.
E. Enantiomers differ with respect to rotation of plane polarised light.
Choose the correct answer from the options given below:

Complete the reaction:
\(\text{NH}_2\text{CONH}_2 + \text{H}_2\text{O} \rightarrow \text{ ?}\)

What is the color of Fe³⁺ (aq) ion?

Arrange the following compounds in increasing order of their acidic character.
(A) m-nitrophenol
(B) p-nitrophenol
(C) Phenol
(D) p-methoxyphenol
Choose the correct answer from the options given below:

IUPAC name of the following compound is :

Which of the following statement is not correct for Butan-2-ol?

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 materials and devices do not obey Ohm's law when
(A) The relation between V and I is not unique, i.e., there is more than one value of V for the same current I
(B) The relation between V and I depends on the sign of V
(C) V ceases to be proportional to I
(D) The relation between V and I is linear
Choose the correct answer from the options given below:

Pick the correct structure for carbolic acid among the following compounds:

The region where the body of the ovule fuses with funicle is known as:

A parallel combination of three resistors takes a current of 7.5 A from a 30 V battery.
If the resistances of two resistors are \( 12 \text{ } \Omega \) and \( 10 \text{ } \Omega \), then the resistance of the third resistor is:

The solution of a LPP with basic feasible solutions (0,0), (10,0), (0,20), (10, 15) and objective function Max Z = 2x + 3y is:

Probabilities to solve a specific problem by A, B and C are \(\frac{1}{2}, \frac{1}{3}\) and \(\frac{1}{4}\ respectively. Probability that at least one will solve the problem is: