The geometry around boron in the product 'B' formed from the following reaction is $$\begin{array}{rl}& {\mathrm{BF}}_3+\mathrm{NaH}\stackrel{450\mathrm{K}}{\to }\mathrm{A}+\mathrm{NaF}\\ & \\ & \mathrm{A}+{\mathrm{NMe}}_3\to \mathrm{B}\end{array}$$

The interhalogen compound formed from the reaction of bromine with excess of fluorine is a :

The total number of acidic oxides from the following list is NO, N2O, B2O3, N2O5, CO, SO3, P4O10

Match List I with List II: .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-7btt{border-color:inherit;font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} List I List II (A) Sulphate (I) Pesticide (B) Fluoride (II) Bending of bones (C) Nicotine (III) Laxative effect (D) Sodium arsinite (IV) Herbicide Choose the correct answer from the options given below :

Match List - I with List - II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-7btt{border-color:inherit;font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} List I (Processes / Reactions) List II (Catalyst) (A) 2SO$${}_2$$(g) + O$${}_2$$(g) $$\to$$ 2SO$${}_3$$(g) (I) Fe(s) (B) 4NH$${}_3$$(g) + 5O$${}_2$$(g) $$\to$$ 4NO(g) + 6H$${}_2$$O(g) (II) Pt(s) $$-$$ Rh(s) (C) N$${}_2$$(g) + 3H$${}_2$$(g) $$\to$$ 2NH$${}_3$$(g) (III) V$${}_2$$O$${}_5$$ (D) Vegetable oil(l) + H$${}_2$$ $$\to$$ Vegetable ghee(s) (IV) Ni(s) Choose the correct answer from the options given below :

Borazine, also known as inorganic benzene, can be prepared by the reaction of 3-equivalents of "$$X$$" with 6-equivalents of "$$Y$$". "$$X$$" and "$$Y$$", respectively are :

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion : Boric acid is a weak acid. Reason R : Boric acid is not able to release $${\mathrm{H}}^{+}$$ ion on its own. It receives $${\mathrm{OH}}^{-}$$ ion from water and releases $${\mathrm{H}}^{+}$$ ion. In the light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Activated charcoal adsorbs SO2 more efficiently than CH4. Reason R : Gases with lower critical temperatures are readily adsorbed by activated charcoal. In the light of the above statements, choose the correct answer from the options given below.

Given below are two statements. Statement I: The chlorides of $$\mathrm{Be}$$ and $$\mathrm{Al}$$ have Cl-bridged structure. Both are soluble in organic solvents and act as Lewis bases. Statement II: Hydroxides of $$\mathrm{Be}$$ and $$\mathrm{Al}$$ dissolve in excess alkali to give beryllate and aluminate ions. In the light of the above statements, choose the correct answer from the options given below.

Which oxoacid of phosphorous has the highest number of oxygen atoms present in its chemical formula?

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : Boron is unable to form $${\mathrm{BF}}_6^{3-}$$. Reason (R) : Size of B is very small. In the light of the above statements, choose the correct answer from the options given below :

White phosphorus reacts with thionyl chloride to give :

Concentrated $${\mathrm{HNO}}_3$$ reacts with Iodine to give :

Dinitrogen and dioxygen, the main constituents of air do not react with each other in atmosphere to form oxides of nitrogen because :

In liquation process used for tin (Sn), the metal :

Given below are two statements. Statement I : Stannane is an example of a molecular hydride. Statement II : Stannane is a planar molecule. In the light of the above statement, choose the most appropriate answer from the options given below.

When borax is heated with $$\mathrm{CoO}$$ on a platinum loop, blue coloured bead formed is largely due to :

Dinitrogen is a robust compound, but reacts at high altitudes to form oxides. The oxide of nitrogen that can damage plant leaves and retard photosynthesis is :

Which of the following compound does not contain sulphur atom?

The mixture of chloroxylenol and terpineol is an example of