AP EAMCET · Chemistry · p Block Elements (Group 13 & 14)
In which of the following reactions, hydrogen is one of the products?
i. \(\mathrm{NaBH}_4+\mathrm{I}_2 \longrightarrow\)
ii. \(\mathrm{BF}_3+\mathrm{NaH} \xrightarrow{450 \mathrm{~K}}\)
iii. \(\mathrm{BF}_3+\mathrm{LiAlH}_4 \longrightarrow\)
iv. \(\mathrm{B}_2 \mathrm{H}_6+\mathrm{NH}_3 \xrightarrow{\text { heat }}\)
- A ii, iii
- B i, ii
- C i, iv
- D iii, iv
Answer & Solution
Correct Answer
(C) i, iv
Step-by-step Solution
Detailed explanation
(i) \(2 \mathrm{NaBH}_4+\mathrm{I}_2 \longrightarrow \mathrm{~B}_2 \mathrm{H}_6+2 \mathrm{NaI}+\mathrm{H}_2\) (ii) \(2 \mathrm{BF}_3+6 \mathrm{NaH} \xrightarrow{450 \mathrm{~K}} \mathrm{~B}_2 \mathrm{H}_6+6 \mathrm{NaF}\) (iii)…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Vapour pressure in \(\mathrm{mm} \mathrm{Hg}\) of 0.1 mole of urea in \(180 \mathrm{~g}\) of water at \(25^{\circ} \mathrm{C}\) is (The vapour pressure of water at \(25^{\circ} \mathrm{C}\) is \(24 \mathrm{~mm} \mathrm{Hg}\) )AP EAMCET 2014 Easy
- Match the following
\begin{array}{llll}
& List I & & List II \\
& (Group 13 element) & & (metallic radius, pm) \\
A & \mathrm{Al} & I & 135 \\
\mathrm{~B} & \mathrm{Ga} & II & 143 \\
\mathrm{C} & In & III & 170 \\
\mathrm{D} & \mathrm{Tl} & IV & 167
\end{array}
The correct answer isAP EAMCET 2023 Easy - Compounds of alkaline earth metals are less soluble in water than the corresponding alkali metal compounds due toAP EAMCET 2017 Easy
- Match the following vitamins with their sources and the corresponding diseases caused by their deficiency.
\begin{array}{llllll}
\hline & Vitamins & & Sources & & Diseases \\
\hline (A) & Vitamin-B _1 & (i) & Egg-whites & (p) & Convulsions \\
\hline (B) & Vitamin-B _2 & (ii) & Fish & (q) & \begin{array}{l}
Pernicious \\
anemia
\end{array} \\
\hline (C) & Vitamin-B _6 & (iii) & \begin{array}{l}
Green \\
vegetables
\end{array} & (r) & Cheilosis \\
\hline (D) & Vitamin-B _{12} & (iv) & Grams & (s) & Beri-Beri \\
\hline
\end{array}AP EAMCET 2021 Easy -
List - I (Polymers) List -II (Type) A. Buna - N - Rubber I Fibre B. Terylene II Thermosetting polymer C. Polystyrene III Elastomer D. Urea - Formaldehyderesin IV Thermoplastic polymer AP EAMCET 2024 Easy - In which of the following, the sol is not correctly matched with respect to its charge?
I. \(\mathrm{Al}_2 \mathrm{O}_3 \cdot \mathrm{x} \cdot \mathrm{H}_2 \mathrm{O}\) sol; + ve sol
II. Starch sol; +ve sol
III. \(\mathrm{TiO}_2\) sol; -ve sol
IV. Methylene blue sol; +ve sol
The correct answer isAP EAMCET 2023 Easy
More PYQs from AP EAMCET
- \(\int\left(1+e^{-x}\right)^{-1} d x=\)AP EAMCET 2020 Easy
- If \(a_n=\sqrt{7+\sqrt{7+\sqrt{7+\ldots n}}}\) times, then which one of the following is true?AP EAMCET 2018 Medium
- At 298 K the value of \(-\frac{\Delta\left[\mathrm{Br}^{-}\right]}{\Delta t}\) for the reaction \(5 \mathrm{Br}^{-}\) \((a q)+\mathrm{BrO}_3^{-}(a q)+6 \mathrm{H}^{+}(a q) \rightarrow 3 \mathrm{Br}_2(a q)+3 \mathrm{H}_2 \mathrm{O}(1)\) is \(x\) \(\mathrm{mol} \mathrm{L} \mathrm{L}^{-1} \mathrm{~min}^{-1}\). What is the rate (in \(\mathrm{mol} \mathrm{L}^{-1} \mathrm{~min}^{-1}\) ) of this reaction?AP EAMCET 2024 Medium
- The value of the determinant \(\left|\begin{array}{lll}b^2-a b & b-c & b c-a c \\ a b-a^2 & a-b & b^2-a b \\ b c-a c & c-a & a b-a^2\end{array}\right|\) isAP EAMCET 2015 Easy
- For which reaction \(\Delta \mathrm{H} \neq \Delta \mathrm{U}\) ?AP EAMCET 2025 Medium
- At \(\mathrm{T}(\mathrm{K})\), the vapour pressure of water is \(x \mathrm{kPa}\). What is the vapour pressure (in kPa ) of 1 molal solution containing non-volatile solute ?AP EAMCET 2025 Medium