Question 3 :
Among hydrogen halides, which of the following has maximum dipole moment ?<br>

Question 6 :
Beyllium and aluminium exhibit many properties which are similar. But, the two elements differ in

Question 9 :
Aluminium oxide is not reduced by chemical reactions due to. <br>

Question 10 :
Which of the following oxygen compounds is not called oxide ?<br>

Question 11 :
Which of the following structure of PCl₃Br₂ is/are most stable ?<br>

Question 12 :
$(i)$A piece of aluminum foil is dropped in dil. hydrochloric acid in a test tube. On bringing a burning match stick near the mouth of the test tube, a pop sound occurs.<br/> $(ii)$A piece of aluminum foil is dropped in dil. sodium hydroxide in a test tube. On bringing a burning match stick near the mouth of the test tube, again a pop sound occurs.<div> <br/></div><div> The product formed in process $(ii)$ is :<br/></div>

Question 13 :
The term 'thio' is used in the names of all of the following compounds except :<br>

Question 14 :
Assertion: Borax bead test is not suitable for $Al$(III) Reason: $Al_2O_3$ is not soluble in water.

Question 15 :
The reaction of $H_3N_3B_3Cl_3(A)$ with $LiBH_4$ in tetrahydrofuran gives inorganic benzene $(B)$. Further, the reaction of $(A)$ with $(C)$ leads to $H_3N_3B_3(Me)_3$. Compounds $(B)$ and $(C)$ respectively, are :