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Assertion - Reason type Questions The questions given below contains statement - 1 (Assertion) and statement - 2 (Reason) Each question has four choices (a), (b),(c) and (d) out of which only one is correct. Choose the correct option as under. Statement - 1 $ Li_2CO_3 and Na_2CO_3$ are therally unstable. Statement - 2 Both the carbonates are salts of large cations and large anions.
Assertion - Reason type Questions The questions given below contains statement - 1 (Assertion) and statement - 2 (Reason) Each question has four choices (a), (b),(c) and (d) out of which only one is correct. Choose the correct option as under. Statement - 1 Metallic character of alkali metals increases on going down a group from top to bottom. Statement - 2 Ionisation enthalpy of alkali metals increases on going down from top to bottom.
Assertion - Reason type Questions The questions given below contains statement - 1 (Assertion) and statement - 2 (Reason) Each question has four choices (a), (b),(c) and (d) out of which only one is correct. Choose the correct option as under. Statement - 1 Superoxides of alkali metals are diamagnetic. Statement - 2 Superoxides contain the ion $ O ^- _2 $ which has one unpaired electron.
correct statement : 1 Superoxides of alkali metals are paramagnetic.
Assertion - Reason type Questions
The questions given below contains statement - 1 (Assertion) and statement - 2 (Reason) Each question has four choices (a), (b),(c) and (d) out of which only one is correct. Choose the correct option as under.
Statement - 1 Beryllium hydroxide becomes soluble in excess alkali forming beryllate ion $ [Be(OH)_4]^{2-} $
Statement - 2 Beryllium ion has greater tendency to form complexes.
The half life period of $ isotopes ^ {223} Fr $ is ....
Sylvine is the mineral of ...
Silastine is the mineral of ...
Which of the following reaction does not occur in solvay ammonia soda process ?
The order of decreasing polarity in the compounds CaO, CsF, KCl, MgO is
According to Fajan rules, polarity increases as the size of the cation increases.
Which is not an ore of Ca ?
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.