Chemistry Test ...

The radioactive isotope  which is used in the treatment of cancer, can be made by (n, p) reaction. What is the target nucleus for this reaction?

The bond lengths and bond angles in the molecules of methane, ammonia and water are given below:

This variation in bond angle is a result of

(i) the increasing repulsion between hydrogen atoms as the bond length decreases

(ii) the number of non-bonding electron pairs in the molecule

(iii) a non-bonding electron pair having a greater repulsive force than a bonding electron pair

For a first order reaction A P, the temperature (T) dependent rate constant (k) was found to follow the equation log 

The pre-exponential factor A and the activation energy E_a respectively are

Directions: The following question has four choices, out of which ONLY ONE is correct.

Wavelengths of X-ray lines of Mg and Cr are 0.987 nm and 0.229 nm, respectively. The values of the constants 'a' and 'b' for this series should respectively be

Identify the incorrect statement.

The gas leaked from a storage tank of the Union Carbide plant in the Bhopal gas tragedy was

What would be the product formed when 1-bromo-3-chlorocyclobutane reacts with two equivalents of metallic sodium in ether?

Consider the following sequence of reactions:

The end product Q is

Identify product 'Z' in the following reaction scheme:

Which of the following characteristics is/are not correct for enzymes?

a. Enzymes show maximum activity when pH is either very low or very high.

b. Enzymes are normally heterogeneous catalysts that are very specific in action.

c. Enzymes are specific biological catalysts that possess well-defined active sites.

d. Chemically, all enzymes are globular proteins.