What is the effect of doubling the concentration of alkyl halide on the rate of reaction for the given reaction?
\(CH_3Br + OH^-\rightarrow CH_3OH + Br^-\)

Select the correct statement.

Partial Roasting of chalcopyrite produces :

When a catalyst is used in a reaction, the heat absorbed or evolved during the reaction

The reduction of cyclohexanone with LiAlH4 will give:

Zone refining is mainly used for :

Match List-I with List-II

List-I (Types of solutions)	List-II (Examples)
(A) Gas in Gas solution	(I) Oxygen dissolved in water
(B) Gas in Liquid solution	(II) Copper dissolved in gold
(C) Liquid in Solid solution	(III) Mixture of oxygen and nitrogen gases
(D) Solid in Solid solution	(IV) Amalgam of mercury with sodium

Choose the correct answer from the options given below:

Which of the following statements are correct?
(A) Kirchhoff's loop rule represents energy conservation.
(B) Resistivity is a property of the material and depends on temperature.
(C) The electrical conductivity of the material does not depend on the material of the conductor and its temperature.
(D) The emf of a battery equals the potential difference between its terminals when the terminals are connected externally.
Choose the correct answer from the options given below:

The IUPAC name of the following compound is

The area of triangle with vertices \(P, Q, R\) is given by (where \(\overrightarrow{A B}=\) position vector of point \(B-\) position vector of point \(A\) )

Match List-I with List-II

List - I	List - II
A. Activation Energy	I. Difference in the energy of activated complex and reactants
B. Threshold Energy	II. Minimum Energy possessed by reactant molecules to form effective collisions
C. Heat of Reaction	III. Negative for exothermic reaction
D. Role of a catalyst	IV. To give new path of reaction

Choose the correct answer from the options given below :

Read the passage carefully. Attempt the questions.
In our body, cell growth and differentiation is highly controlled and regulated. In cancer cells, there is breakdown of these regulatory mechanisms. Cancerous cells just continue to divide giving rise to masses of cells called tumors. Benign tumors normally remain confined to their original location. The malignant tumors, on the other hand are a mass of proliferating cells. These cells actively divide and starve the normal cells by competing for vital nutrients. Cells sloughed from such tumors reach distant sites through blood, and wherever they get lodged in the body, they start a new tumor there. This property is called metastasis. Transformation of normal cells into cancerous cells may be induced by physical, chemical or biological agents called carcinogens.
Cancer is caused by:
A. Carcinogens
B. Protein rich foods
C. Primary lymphocytes
D. Oncogenes
Choose the correct answer from the options given below:

Ferro-magnetic materials used in transformer core must have :