Question 1 :
Which of the following is correct statement regarding $N(CH_3)_3$ and $N(SiH_3)_3$?

Question 3 :
The type of bond between the atoms in a nitrogen molecule is :

Question 5 :
Assertion: $H_{3}PO_{4}$ and $H_{3}PO_{3}$ both are present in fertilizers. Reason: $H_{3}PO_{3}$ increases the solubility of fertilizers.

Question 6 :
Maximum number of covalent bonds formed by N and P respectively are :

Question 7 :
Which of the following is an example of super octet molecule?

Question 12 :
Which of the following is correct about V group Hydrides (from ammonia to Bismuthine)<br/>

Question 19 :
Which one of the following elements does not form the compound, M$_{4}$ O$_{10}$ (M = element)?<br/><br/>

Question 20 :
Which of the following pairs is obtained on heating ammonium dichromate?

Question 21 :
In all the group $15$ elements, the number of unpaired electrons in the valence shell is :

Question 22 :
Which is in the decreasing order of boilingpoints of $\mathrm{V}$ group hydrides?<br>

Question 27 :
$CN^-$ and $N_2$ are isoelectronic. But in contrast to $CN^-, N_2$ is chemically inert because of:

Question 28 :
Assertion: Catenation tendency is weaker in nitrogen. Reason: Nitrogen exits as diatomic gas.

Question 33 :
Assertion: Although $PF_5, PCl_5$, and $PBr_5$ are known, the pentahalides of nitrogen have not been observed. Reason: Phosphorous has lower electronegativity than nitrogen.

Question 37 :
Ethene reacts with $Y$ to produce ethanol.<br>$ethene + Y \rightarrow ethanol$<br>What is $Y$?

Question 38 :
Compond (X) $\xrightarrow[]{(1)HgSO_4} \xrightarrow[]{(2)NaBH_4} \xrightarrow[]{(3)ZnCl_2}$ product gives precipitate in $5$ min.<br>Compound (X) is

Question 41 :
What will happen when diethyl ether treated with hot and conc. $HI$?

Question 42 :
Ethanoic acid can be obtained from ethanol by the process of :<br/>

Question 43 :
Acetyl bromide when reacts with excess of $CH_3MgI$ followed by treatment with saturated solution of $NH_4Cl$ it gives.

Question 44 :
An organic compound (A) reacts with methyl magnesium iodide to form an addition product which on hydrolysis forms the compound (B). Compound (B) gives blue colour salt in Victor Meyer's test. The compounds (A) and (B) are respectively:

Question 45 :
Which of the following are the starting materials for the Grignard's synthesis of tert. butyl alcohol?

Question 47 :
Propane is not formed when ${C}_{3}{H}_{7}MgBr$ is treated with _________ .

Question 48 :
Acetone on treatment with $ CH_3 -Mg -I $ and on further hydrolysis gives&#160;

Question 49 :
Primary alcohols are obtained by the&#160;reaction of Grignard reagent with :&#160;<br/>

Question 50 :
Identify the reactant $ X $ and the product $ Y $&#160;<br/>$ CH_3 - CO - CH_3 + X \rightarrow (CH_3)_3C - OMg - Cl $<br/>&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160;$ {\downarrow}{Hydrolysis} $&#160;<br/>&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160;&#160;&#160;&#160;$ Y + Mg (OH) Cl $<br/>

Question 52 :
Which of the following alcohol cannot be synthesized by using $\displaystyle { C }_{ 2 }{ H }_{ 5 }-Br$?

Question 55 :
Which of the following products is formed when benzaldehyde is treated with $ CH_3MgBr $ and the addition product so obtained is subjected to acid hydrolysis

Question 56 :
Which is the major product obtained by hydrolysis of compound formed by reaction between<br>formaldehyde and ethyl magnesium bromide?

Question 58 :
A primary amine can be converted to an alchohol by the action of

Question 60 :
Assertion: The solubility of n-alcohol in water decreases with an increase in molecular weight. Reason: The reactive proportion of the hydrocarbon part in alcohols increases with increasing molecular weight which permits enhanced hydrogen bonding with water.

Question 61 :
Which of the following alcohols is the least soluble in water?

Question 62 :
Among the three isomers of the nitrophenol, the one that is least soluble in water is:

Question 64 :
Solubility of alcohols in water is _______ to that of hydrocarbons of comparable molecular masses.<br/>

Question 67 :
Which of the following statements is not correctly showing the trend of the properties mentioned ?

Question 68 :
Unlike phenol, 2,4-dinitrophenol is soluble in sodium carbonate solution in water because ?

Question 69 :
Alcohols containing only up to ___________ carbon atoms are completely miscible with water.<br/>

Question 70 :
Alcohols containing only up to ________________carbon atoms are completely miscible with water.