List of practice Questions

Make a meaningful sentence by using the phrase 'to look after'.
Add a clause to the following sentence to expand it meaningfully :
I selected three poems.
Add a prefix or suffix to make new words :
(i) courage
(ii) wonder
Make a meaningful sentence using any one of the following words :
(i) courage
(ii) wonder
Complete the following words by using correct letters :
(i) Pe_ple
(ii) Mat_h
(iii) Hou_e
(iv) Ad_lt
Put the following words in alphabetical order :
(i) survive, leader, discuss, present
(ii) light, loyal, luck, large
Punctuate the following sentences :
(i) well i wish you luck said sitaram
(ii) whats your name little one asked the teacher

Explain the following terms: 
I. Substitutional impurity defect
II. Interstitial impurity defect

Write the chemical reactions for the following: 
I. Chlorobenzene is heated with fuming H\(_2\)SO\(_4\) 
II. Ethyl bromide is heated with silver acetate

What is the action of the following reagents on ethylamine?
I. Chloroform and caustic potash
II. Nitrous acid

Draw structures of the following compounds: 
I. Chloric acid 
II. Peroxy disulfuric acid

Explain formation of \([CoF_6]^{3-}\) complex with respect to
i. Hybridisation ii. Magnetic properties
iii. Inner/outer complex iv. Geometry 
 

Show that, time required for 99.9% completion of a first order reaction is three times the time required for 90% completion. Give electronic configuration of Gd (Z = 64). Write the name of nano structured material used in car tyres to increase the life of tyres. 
 

Write Dow process for preparation of Phenol. What is the action of bromine water on phenol? Give reason: Group 16th elements have lower ionization enthalpy compared to group 15th elements. Write two uses of dioxygen. 
 

Silver crystallizes in fcc structure. If edge length of unit cell is 400 pm, calculate density of silver (Atomic mass of Ag = 108). Write a note on Halform reaction.
Define: Stereoisomers. Give cis and trans isomers of \([Co(NH_3)_4Cl_2]^+\). What is reference electrode?
Explain Aldol condensation of ethanal.
Explain anomalous behaviour of oxygen in group 16 with respect to: i. Atomicity ii. Magnetic property iii. Oxidation state
Write chemical reactions for the following conversions: i. Acetic acid into acetic anhydride ii. Acetic acid into ethyl alcohol Write IUPAC name and structure of methylphenylamine.
Derive relationship between \(\Delta H\) and \(\Delta U\) for gaseous reaction. Define: Vulcanization What is peptide bond?
What are interstitial compounds? Give the classification of alloys with examples.
Draw labelled diagram of H$_2$ - O$_2$ fuel cell. Write two applications of fuel cell.
What is Pseudo first order reaction? Derive integrated rate law equation for zero order reaction.
A weak monobasic acid is 10\% dissociated in 0.05 M solution. What is the percent dissociation in 0.15 M solution?
Explain the dehydrohalogenation reaction of 2-chlorobutane. Write use and environmental effect of CFC.