List of practice Questions

Explain velocity (rate) constant of a reaction.
Is oxidation of bromide ion into bromine by ferric ion possible?
The boiling point of alcohols increases with the increase in the number of carbon atoms but decreases on branching. Why?
Why does the +3 and +4 oxidation state of Cerium (Ce) remain stable?
Write structural formula of primary, secondary, and tertiary benzylic alcohol.
Four alternatives are given in each part of this question. Choose the correct alternative and write it in your answer-book. Number of moles in 180 g of water is:
Write chemical equations for the reaction of (x) ethanamine with HCl and (y) aniline with \( NaNO_2 \) and dilute HCl at \( 0^\circ C \).
Write general electronic configuration of d-block and f-block elements.
Define specific resistance and conductance of a cell.
State important applications of phenol.
State the difference between molecularity of a reaction and order of a reaction. Write the velocity equation for the reaction \( H_2(g) + Cl_2(g) \rightarrow 2HCl(g) \), which is a zero-order reaction.
State the role of hormones in our body.
What are amines? Write one differentiating test for primary, secondary, and tertiary amines.
Write a short note on Rosenmund reduction. Write only the chemical equation of the reaction of ethyne with water in presence of \( H_2SO_4 \) and \( HgSO_4 \).
46 g ethanol is dissolved in 54 g water. Calculate mole fraction of ethanol and water.
Explain the effect of temperature and concentration on the velocity of a reaction.
Calculate the normality of a solution prepared by dissolving 325 g of anhydrous sodium carbonate (\( Na_2CO_3 \)) in 250 mL of water. Equivalent weight of \( Na_2CO_3 \) is 5
Write ions produced in an aqueous solution of \( K_4[Fe(CN)_6] \). What is the oxidation number of \( Fe \) in this compound?
Write the difference between Galvanic cell and Electrolytic cell.
Electrode potential of standard hydrogen electrode is:
The configuration showing maximum oxidation state is:
The true statement for the formula \( K = Ae^{-E_a / RT} \) is:
Not very far from Srinagar, on the second terrace of Burzahom, at least two Neolithic sites are known. These are:
What is the difference between nuclear fission and nuclear fusion? Explain each of them with the help of an appropriate example. Why is in both incidents the nuclear energy released?

Focal length of each lens is 10 cm as shown in the given figure. Find the distance of the image of point object O from the convex lens and also draw the ray diagram. If both lenses are placed in contact, what will be the power of the combined lens?