Question 1 :
Elements of IIA group having electronic configuration <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea8d274fdd8313cc8728626"> are called alkaline earth elements because:

Question 2 :
In the extraction of sodium by Downs process, cathode and anode are respectively

Question 4 :
The solubilities of carbonates decrease down the magnesium group due to decrease in

Question 7 :
When one mole of bleaching powder is completely decomposed in presence of <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea8d1cca3d2442ab829505f"> then the mass of chlorine gas that is liberated will be:

Question 9 :
In the Downs cell <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea8d1e7fdd8313cc872848a"> is added in <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea8d1c8a3d2442ab8295042"> to:

Question 10 :
The major role of fluorspar {tex}\mathrm {(CaF)}{/tex} which is added in small quantity in the electrolytic reduction of alumina dissolved in fused cryolite {tex} \left( \mathrm { Na } _ { 3 } \mathrm { AlF } _ { 6 } \right) {/tex} is :- <br>(a) as a catalyst <br>(b) to make the fused mixture very conducting <br>(c) to lower the temperature of melting <br>(d) to decrease the rate of oxidation of carbon at the anode

Question 11 :
Anhydrous magnesium chloride can be prepared by heating <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea8d274fdd8313cc8728628"> :

Question 12 :
What would you observe if excess of dilute <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5ea8d1d3fdd8313cc87283f9"> solution is added and shaken with an aqueous solution of aluminium chloride?

Question 19 :
Metals belonging to the same group in the periodic table are:

Question 23 :
In which of the following molecule central atom is having complete octet

Question 25 :
One of the elements present in carnallite shows flame colouration. The colour of the flame is

Question 29 :
Lithium is the only alkali metal which is not placed in kerosene but is wrapped in paraffin wax, because:

Question 31 :
The table shows some reactions of a white compound, G.<br/><br/><table class="wysiwyg-table"><tbody><tr><td>Test</td><td>Observation</td></tr><tr><td>Silver nitrate is added to a solution of G followed by aqueous ammonia</td><td>A precipitate is formed which does not dissolve when the ammonia is added</td></tr><tr><td>Solid G is warmed with concentrated sulfuric acid</td><td>A mixture of gases is formed including hydrogen sulphide</td></tr></tbody></table><br/><div>What could be the identity of G?<br/></div>

Question 34 :
Which element has high concentration in plants, as compared to sodium?

Question 36 :
In the case of alkali metals, the covalent character decreases in the order :

Question 37 :
There is loss in weight when mixture of $Li_{2}CO_{3}$ and $Na_{2}CO_{3}\cdot10H_{2}O$ is heate strongly. This loss is due to :

Question 40 :
A metal carbonate,$M_xCO_3$, is heated in a closed container and the product is passed through lime water and lime water turns milky.The metal $M$ can be:

Question 41 :
For $Na+NH_3 \to (A)&#160;\underrightarrow { N_2O } (B)&#160;\underrightarrow { Heat }\ gas (X)$, Which of the following is correct?&#160;

Question 43 :
Caustic soda is insoluble in Water,ethanol and methanol.<br/><p>State True or False:<br/></p>

Question 45 :
A compound of sodium does not give $CO_2$ when heated but it gives $CO_2$ when treated with dilute acids. A crystalline compound is found to have 37.1% Na and 14.52% $H_2O$. Hence, the compound is :

Question 46 :
<div>State True or False.<br/></div>Aqueous solution of brine on electrolysis forms sodium.

Question 47 :
In the following sequence of reactions, identify the compounds $(A), (B), (C)$ and $(D)$:<br>$Na_{2}CO_{3}\xrightarrow [ ]{ SO_{2} }(A)\xrightarrow [ ]{ Na_{2}CO_{3} }(B)\xrightarrow [ Heat ]{ S } (C) \xrightarrow [ ]{ AgNO_{3} }(D)$<br>

Question 50 :
<div>Alkali metals readily react with oxyacids forming corresponding salts like ${ M }_{ 2 }{ CO }_{ 3 }$, ${ M }H{ CO }_{ 3 }$, ${ M }N{ O }_{ 3 }$, ${ M }_{ 2 }{ SO }_{ 4 }$, etc. with evolution of hydrogen. They also dissolve in liquid ${ NH }_{ 3 }$ but without the evolution of hydrogen. The color of its dilute solution is blue but when it is heated and concentrated then its color becomes bronze.<br/></div><br/>Which of the following statement about the sulphate of alkali metal is correct :