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s-Block Elements · Chemistry · NEET
MCQ (Single Correct Answer)
1
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : Lithium and beryllium unlike their other respective group members form compounds with pronounced ionic character.
Reason (R) : Lithium and Magnesium have similar properties due to diagonal relationship.
In the light of the above statements, choose the correct answer from the options given below:
NEET 2023 Manipur
2
Given below are two statements : one is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\mathbf{R}$$ :
Assertion A : Metallic sodium dissolves in liquid ammonia giving a deep blue solution, which is paramagnetic.
Reason R : The deep blue solution is due to the formation of amide.
In the light of the above statements, choose the correct answer from the options given below :
NEET 2023
3
Which one of the following statements is correct?
NEET 2023
4
Weight (g) of two moles of the organic compound, which is obtained by heating sodium ethanoate with sodium hydroxide in presence of calcium oxide is :
NEET 2023
5
The element used for welding metals with high melting points is
NEET 2022 Phase 2
6
CaCl2 and Ca(OCl)2 are components of
NEET 2022 Phase 2
7
Which one of the following is not a calcination reaction?
NEET 2022 Phase 2
8
Identify the incorrect statement from the following
NEET 2022 Phase 1
9
Match List - I with List - II
| List - I | List - II | ||
|---|---|---|---|
| (a) | Li | (i) | absorbent for carbon dioxide |
| (b) | Na | (ii) | electrochemical cells |
| (c) | KOH | (iii) | coolant in fast breeder reactors |
| (d) | Cs | (iv) | photoelectric cell |
Choose the correct answer from the options given below :
NEET 2022 Phase 1
10
Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is :
NEET 2021
11
The structures of beryllium chloride in solid state and vapour phase, are :
NEET 2021
12
The following metal ion activities many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.
NEET 2020 Phase 1
13
HCl was passed through A solution of CaCl2, MgCl2 and NaCl. Which of the following compound(s) crystallize(s)?
NEET 2020 Phase 1
14
Which of the following is an amphoteric hydroxide?
NEET 2019
15
Enzymes that utilize ATP is phosphate transfer require an alkaline earth metal (M) as the cofactor. M is
NEET 2019
16
Among CaH2
, BeH2
, BaH2
, the order of ionic
character is
NEET 2018
17
Magnesium reacts with an element (X) to form
an ionic compound. If the ground state
electronic configuration of (X) is 1s22s22p3,
the simplest formula for this compound is
NEET 2018
18
Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field?
NEET 2017
19
The suspension of slaked lime in water is known as
NEET 2016 Phase 2
20
In context with beryllium, which one of the following statements is incorrect?
NEET 2016 Phase 2
21
The product obtained as a result of a reaction of nitrogen with CaC2 is
NEET 2016 Phase 1
22
Which of the following statments is false?
NEET 2016 Phase 1
23
On heating which of the following releases CO2 most easily?
AIPMT 2015
24
20.0 g of a magnesium carbonate sample decomposes on heating to give carbon dioxide and 8.0 g magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample?
(At. wt. of Mg = 24)
(At. wt. of Mg = 24)
AIPMT 2015
25
Solubility of the alkaline earth metal sulphates in water decreases in the sequence
AIPMT 2015 Cancelled Paper
26
The function of ''Sodium pump'' is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a constituent of this pump?
AIPMT 2015 Cancelled Paper
27
In Castner-Kellner cell for production of sodium hydroxide
NEET 2013 (Karnataka)
28
Which one of the alkali metals, forms only, the normal oxide, M2O on heating in air?
AIPMT 2012 Prelims
29
The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resins follows the order :
AIPMT 2012 Prelims
30
Match List-I with List-II for the compositions of substances and select the correct answer using the code given above.
| List-I (Substances) |
List-II (Composition) |
||
|---|---|---|---|
| (A) | Plaster of Pairs | (i) | CaSO4$$ \cdot $$2H2O |
| (B) | Epsomite | (ii) | CaSO4$$ \cdot $$1/2 H2O |
| (C) | Kieserite | (iii) | MgSO4$$ \cdot $$7H2O |
| (D) | Gypsum | (iv) | MgSO4$$ \cdot $$H2O |
| (v) | CaSO4 | ||
AIPMT 2011 Mains
31
Which of the following compounds has the lowest melting point?
AIPMT 2011 Prelims
32
Which one of the following is present as an active ingredient in bleaching powder for bleaching action?
AIPMT 2011 Prelims
33
The compound A on heating gives a colourless gas and a residue that is dissolved in water to obtain B. Excess of CO2 is bubbled through aqueous solution of B, C is formed which is recovered in the solid form. Solid C on gentle heating gives back A. The compound is
AIPMT 2010 Mains
34
Property of the alkaline earth metals that increases with their atomic number
AIPMT 2010 Prelims
35
Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice enthalpy?
AIPMT 2010 Prelims
36
Which one of the following compounds is a peroxide?
AIPMT 2010 Prelims
37
Which of the following oxides is not expected to react with sodium hydroxide?
AIPMT 2009
38
In the case of alkali metals, the covalent character decreases in the order
AIPMT 2009
39
Equimolar solutions of the following were prepared in water separately. Which one of the solutions will record the highest pH?
AIPMT 2008
40
The alkali metals form salt-like hydrides by the direct synthesis at elevated temperature. The thermal stability of these hydrides decreases in which of the following orders?
AIPMT 2008
41
The sequence of ionic mobility in aqueous solution is
AIPMT 2008
42
The correct order of increasing thermal stability of K2CO3, MgCO3, CaCO3 and BeCO3 is
AIPMT 2007
43
In which of the following the hydration energy is higher than the lattice energy?
AIPMT 2007
44
The correct order of the mobility of the alkali metal ions in aqueous solution is
AIPMT 2006
45
A solid compound X on heating gives CO2 gas and a residue. The residue mixed with water forms Y. On passing an excess of CO2 through Y in water, a clear solution Z is obtained. On boiling Z, compound X is reformed. The compound X is
AIPMT 2004
46
In which of the following processes, fused sodium hydroxide is electrolysed at a 330oC temperature for extraction of sodium?
AIPMT 2002