List of practice Questions

The electronegativity of the following elements is in the order

The heats of neutralisation of four acids $A,B,C$ and $D$ when neutralised against a common base are $13$. $7, 9.4,11.2$, and $12.4 \,kcal$ respectively. The weakest and strongest among these acids are respectively

An organic compound of molecular formula $C_{4}H_{10}O$ does not react with sodium. With excess of $HI$, it gives only one type of alkyl halide. The compound is

Pick out the unsaturated fatty acid from the following

Which one of the following statements regarding ammonia is not correct?

A neutral compound with molecular formula $C_2H_6O$ evolves hydrogen when treated with

Aspirin, an antipyretic drug is chemically

Substance used for the preservation of colouredfruit juices is

Which of the following is an insecticide ?

The antiseptic present in Dettol is

The drug that is effective in the treatment of typhoidis

Which of the following represents an analgesic ?

Penicillin is a/an

An example of a psychedilic agent is

0.2% solution of phenol is ___________while its 1% solution is________

Penicillin was first discovered by

The correct order of reactivity of halogen is

Which one of the following liberate bromine when reacted with $KBr$?

Ozone is used for purifying water because

Which of the following is a tribasic acid?

Which kind of isomerism is exhibited by octahedral $[Co(NH_3)_4Br_2]Cl$ ?

Which of the following oxide is amphoteric ?

Which is correctly matched ?

$B$ is an extremity of the minor axis of an ellipse whose foci are $S$ and $S'$. If $?SBS'$ is a right angle, then the eccentricity of the ellipse is

Yellow colored solution of $ FeC{{l}_{3}} $ changes to light green, when: