Q. Maximum number of electrons that can be accommodated in the subshell with the azimuthal quantum number $l=4$, is:

1. $8$
2. $16$
3. $10$
4. $18$

Q. The correct order of acidity of the given compounds is:

1. $1>2>3$
2. $1>3>2$
3. $3>1>2$
4. $3>2>1$

Q. When $262g$ of xenon (atomic mass $=131$) reacted completely with $152g$ of fluorine (atomic mass $=19)$, a mixture of $Xe{F}_2$ and $Xe{F}_6$ was produced. The molar ratio $Xe{F}_2:Xe{F}_6$ is :

1. $1:2$
2. $1:4$
3. $1:1$
4. $1:3$

Q. When $22.4L$ of $C_4{H}_8$ at $STP$ is burnt completely, $89.6L$ of $C{O}_2$ gas the $STP$ and $72g$ of water are produced. The volume of the oxygen gas the STP consumed in the reaction is closest to

1. $89.6L$
2. $112L$
3. $22.4L$
4. $134.4L$

Q. Reaction of 2-butene with acidic $KMn{O}_4$ gives:

Q. The major product of the reaction is

1. I
2. II
3. III
4. IV

Q. Reaction of ethanol with conc. sulphuric acid at ${170}^{\circ }C$ produces a gas which is then treated with bromine in carbon tetrachloride. The major product obtained in this reaction is :

1. $1,2-$dibromoethane
2. Ethylene glycol
3. Bromoethane
4. Ethyl sulphate

Q. The amount of $Ag$ (atomic mass $=108$) deposited at the cathode when a current of $0.5amp$ is passed through a solution of $AgN{O}_3$ for $1$ hour is closest to

1. $108g$
2. $2g$
3. $5g$
4. $11g$

Q. Mendeleev's periodic law states that the properties of elements are a periodic function of their:

1. atomic size
2. reactivity of elements
3. electronic configuration
4. atomic mass

Q. The percentage of nitrogen by mass in ammonium sulphate is closest to

1. $21$%
2. $24$%
3. $36$%
4. $16$%