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The strongest base is
Ammonia ($NH_3$) is the strongest base among the given options. The basicity decreases down the group in the periodic table from $NH_3$ to $SbH_3$ due to the decreasing availability of the lone pair of electrons on the central atom.
The cyaide ion, $ CN^–, N_2 are iso electronic. But in contrast to CN^–, N_2$ is chemically inert because of
When lighting flash is produced, which gas may form
A mixture of ammonia and air at about $ 800 ^\circ $ C in the presence of Pt gauze forms
$ 4NH_3 + 5O_2 \xrightarrow [800 ^\circ C ] { {Pt} } 4NO + 6H_2 O$
Which of the following is the most basic oxide
Ammonia gas can be collected by the displacemet of
Ammonia gas is less dense than air and is highly soluble in water. Therefore, it cannot be collected over water or brine. It is also not advisable to collect it over concentrated sulfuric acid due to reactivity concerns. Mercury, being a dense and non-reactive metal, is an ideal medium for the collection of ammonia gas by displacement.
The chemical used for cooling in refrigeration is
Liquid ammonia ( extit{NH}_3) is commonly used as a refrigerant in cooling systems. It has a high latent heat of vaporization, which makes it efficient for absorbing heat and producing a cooling effect. Other chemicals listed are not typically used for this purpose.
Reaction of $ PCl_3 and PhMgBr$ Would give
Reaction between $ PCl_3 & Ph MgBr gives triphenyl phosphine. 3C_6 H_5 MgBr + PCl_3 \rightarrow (C_6H_5)_3 P + 3 Mg Cl Br $
Which of the following P is most stable
Due to less reactivity
The least stable hydride of 75th group elements in
Bismuth hydride ( extit{BiH}_3) is the least stable hydride among the 15th group elements. Stability of hydrides decreases down the group due to the increasing atomic size and decreasing bond strength. Therefore, extit{BiH}_3 is the least stable compared to extit{NH}_3, extit{PH}_3, and extit{AsH}_3.
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.