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In the synthesis of sodium carbonate, the recovery of ammonia is done by treating $NH_4Cl with Ca(OH)_2$ .The by product obtained in this process is ...
$ 2NH_4Cl_{(s)} + Ca(OH)_{2(aq)} \xrightarrow [] {\triangle} 2NH_{3(g )} + CaCl_{2 (aq)} + H_2 O _{(l)} $
When sodium is dissolved in liquid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due to ...
By adding gypsum to cement...
Dead burnt plaster is ...
A substance which gives crimson red flame and breaks on heating to give oxygen and a brown gas is ..
The formula of sodash is ...
$ 2Sr(NO_3)_2 \xrightarrow [] { \triangle } 2SrO + O_2 + 4NO_2 \rightarrow brown gas$ gives Crimson red flame.
Identify the correct formula of halides of alkaline earth metals from the following.
Which of the following statement is true about $ Ca(OH)_2$ ?
Match the elements given in Column - I with the colour they impart to the flame given in Column - II. Column - I (A) Cs (B) Sr (C) K (D) Ca (E) Ba Column - II (P) Apple green (Q) Brick red (R) Blue (S) Crimson red (T) Violet
When water is added to compound (A) of calcium, solution of compound (B) is formed. When $ CO_2 $ is passed into the solution, it turns milky due to the formation of compound (C). If excess of carbon dioxide is passed into the solution, milkiness disappears due to the formation of compound (D). Identify the compound (D).
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.