Q JEE MAIN 2019

The metal that gives hydrogen gas upon treatment with both acid as well as base is

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Q JEE MAIN 2019

The correct sequence of thermal stability of the following carbonates is :

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Q JEE MAIN 2020

Two elements A and B have similar chemical properties. They don’t form solid hydrogencarbonates, but react with nitrogen to form...

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Q JEE MAIN 2019

The temporary hardness of a water sample is due to compound X. Boiling this sample converts X to compound Y....

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Q JEE MAIN 2019

The INCORRECT statement is :

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Q JEE-MAIN 2019

A metal on combustion in excess air forms $X$. $X$ upon hydrolysis with water yields $\mathrm{H}_2 \mathrm{O}_2$ and $\mathrm{O}_2$ along...

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Q JEE MAIN 2019

The metal that forms nitride by reacting directly with $\mathrm{N}_2$ of air, is

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Q JEE MAIN 2019

Magnesium powder burns in air to give

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Q JEE MAIN 2019

The metal that forms nitride by reacting directly with $\mathrm{N}_2$ of air, is

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Q JEE MAIN 2020

Among the sulphates of alkaline earth metals, the solubilities of $\mathrm{BeSO}_4$ and $\mathrm{MgSO}_4$ in water, respectively, are

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Q JEE MAIN 2020

Match the following compounds (Column-I) with their uses (Column-II)

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Q JEE MAIN 2020

When gypsum is heated to 393 K, it forms

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Q JEE MAIN 2019

A hydrated solid X on heating initially gives a monohydrated compound Y. Y upon heating above 373 K leads to...

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Q JEE Main 2019

The metal used for making X-ray tube window is

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Q JEE MAIN 2020

On combustion of Li, Na and K in excess of air, the major oxides formed, respectively, are

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Q JEE MAIN 2020

Among the statements (a)-(d), the correct ones are (a) Lithium has the highest hydration enthalpy among the alkali metals. (b)...

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Q JEE MAIN 2020

An alkaline earth metal ‘M’ readily forms water soluble sulphate and water insoluble hydroxide. Its oxide MO is very stable...

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Q JEE MAIN 2020

5 g of zinc is treated separately with an excess of (a) Dilute hydrochloric acid and (b) Aqueous sodium hydroxide....

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Q JEE MAIN 2019

Match the following items in column I with the corresponding items in column II.

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Q JEE MAIN 2021

A metal (A) on heating in nitrogen gas gives compound B. B on treatment with $\mathrm{H}_2 \mathrm{O}$ gives a colourless...

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Q JEE-MAIN 2020

Among the statements (I – IV), the correct ones are (I) Be has smaller atomic radius compared to Mg. (II)...

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Q JEE MAIN 2021

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R)....

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Q JEE MAIN 2019

Sodium metal on dissolution in liquid ammonia gives a deep blue solution due to the formation of

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Q JEE MAIN 2021

Choose the correct statement from the following

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Q JEE-MAIN 2021

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R)....

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Q JEE MAIN 2021

The number of water molecules in gypsum, dead burnt plaster and plaster of paris, respectively are:

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Q JEE-MAIN 2021

Number of paramagnetic oxides among the following given oxides is __________. $\mathrm{Li}_2 \mathrm{O}, \mathrm{CaO}, \mathrm{Na}_2 \mathrm{O}_2, \mathrm{KO}_2, \mathrm{MgO}$ and $...

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Q JEE MAIN 2021

Number of paramagnetic oxides among the following given oxides is $\_\_\_\_$ $\mathrm{Li}_2 \mathrm{O}, \quad \mathrm{CaO}, \quad \mathrm{Na}_2 \mathrm{O}_2, \quad \mathrm{KO}_2$,...

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Q JEE MAIN 2021

The major component/ingredient of Portland Cement is :

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Q JEE MAIN 2019

The correct order of hydration enthalpies of alkali metal ions is

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Q JEE MAIN_2021

Match List - I with List II :

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Q JEE MAIN 2021

A s-block element (M) reacts with oxygen to form an oxide of the formula $\mathrm{MO}_2$. The oxide is pale yellow...

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Q JEE MAIN 2021

Match List I with List II : Choose the correct answer from the options given below :

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Q JEE MAIN 2021

Match List-I with List-II Choose the correct answer from the options given below :

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Q JEE MAIN 2021

Given below are two statements : Srtatement II : Solubility of alkaline earth metal hydroxides in water increases down the...

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Q JEE MAIN 2021

Given below are two statements : One is labelled as Assertion A and the other labelled as Reason R. Assertion...

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Q JEE MAIN 2021

Match List - I with List - II : Choose the most appropriate answer from the options given below

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Q JEE MAIN 2019

The covalent alkaline earth metal halide (X = Cl, Br, I) is

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Q JEE MAIN 2021

Match list-I with list-II : Choose the most appropriate answer the option given below :

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Q JEE Main 2019

The alkaline earth metal nitrate that does not crystallise with water molecules, is

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Q JEE MAIN 2021

The correct set from the following in which both pairs are in correct order of melting point is

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Q JEE MAIN 2021

Match List-I with List-II : Choose the correct answer from the options given below :

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Q JEE MAIN 2021

Match List-I with List-II Choose the most appropriate answer from the options given below :

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Q JEE MAIN 2021

Choose the correct answer from the options given below

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Q JEE MAIN 2022

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R....

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Q JEE MAIN 2022

Given below are two statements: Statement I : The chlorides of Be and Al have Cl-bridged structure. Both are soluble...

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Q JEE MAIN 2022

The correct order of density is

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Q JEE MAIN 2022

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R....

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Q JEE MAIN 2022

Which of the following statement is incorrect ?

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Q JEE MAIN 2022

An element A of group 1 shows similarity to an element B belonging to group 2. If A has maximum...

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Q JEE MAIN 2022

Portland cement contains 'X' to enhance the setting time. What is 'X'?

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Q JEE MAIN 2022

Lithium nitrate and sodium nitrate, when heated separately, respectively, give :

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Q JEE MAIN 2022

Statement I : An alloy of lithium and magnesium is used to make aircraft plates. Statement II : The magnesium...

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Q JEE MAIN 2022

Reaction of $\mathrm{BeCl}_2$ with $\mathrm{Li}_4 \mathrm{IH}_4$ gives :

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Q JEE MAIN 2022

The correct decreasing order for metallic character is

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Q JEE-Main 2022

Choose the correct order of density of the alkali metals :

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Q JEE MAIN 2022

Amongst baking soda, caustic soda and washing soda carbonate anion is present in :

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Q JEE MAIN 2022

BeO reacts with HF in presence of ammonia to give [A] which on thermal decomposition produces [B] and ammonium fluoride....

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Q JEE MAIN 2022

Boiling of hard water is helpful in removing the temporary hardness by converting calcium hydrogen carbonate and magnesium hydrogen carbonate...

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Q JEE-Main 2022

Which one of the following compounds is used as a chemical in certain type of fire extinguishers?

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Q JEE-Main 2022

In the industrial production of which of the following, molecular hydrogen is obtained as a byproduct?

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Q JEE MAIN 2022

$\mathrm{BeCl}_2$ reacts with $\mathrm{LiAlH}_4$ to give

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Q JEE MAIN 2022

Match the List-I with List- II. Choose the most appropriate answer from the options given below:

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Q JEE MAIN 2022

Addition of $\mathrm{H}_2 \mathrm{SO}_4$ to $\mathrm{BaO}_2$ produces:

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Q JEE-Main 2022

Which one of the following elemental forms is not present in the enamel of the teeth?

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Q JEE-Main 2022

Which of the following statements are correct ? Choose the most appropriate answer from the options given below:

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Q JEE MAIN 2022

The correct order of melting point is :

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Q JEE MAIN 2022

Which one of the following alkaline earth metal ions has the highest ionic mobility in its aqueous solution?

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Q JEE-Main_2023

The number of alkali metal(s), from Li, K, Cs, Rb having ionization enthalpy greater than 400 kJ $\mathrm{mol}^{-1}$ and forming...

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Q JEE MAIN 2023

$\mathrm{Mg}\left(\mathrm{NO}_3\right)_2 \cdot \mathrm{XH}_2 \mathrm{O}$ and $\mathrm{Ba}\left(\mathrm{NO}_3\right)_2 \cdot \mathrm{YH}_2 \mathrm{O}$, represent formula of the crystalline forms of nitrate salts. Sum of...

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Q JEE MAIN 2023

For a good quality cement, the ratio of lime to the total of the oxides of Si, Al and Fe...

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Q JEE MAIN 2023

Alkali metal from the following with least melting point is:

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Q JEE MAIN 2023

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R Assertion...

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Q JEE MAIN 2023

Better method for preparation of BeF2, among the following is: (1) $\left(\mathrm{NH}_4\right)_2 \mathrm{BeF}_4 \xrightarrow{\Delta} \mathrm{BeF}_2$ (2) $\mathrm{BeH}_2+\mathrm{F}_2 \xrightarrow{\Delta} \mathrm{BeF}_2$ (3)...

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Q JEE MAIN 2023

The correct order of metallic character is:

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Q JEE MAIN 2023

Number of water molecules in washing soda and soda ash respectively are:

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Q JEE MAIN 2023

Arrange the following gases in increasing order of van der Waals constant ‘a’ A. Ar B. CH4 C. H2O D....

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Q JEE MAIN 2023

Structure of $\mathrm{BeCl}_2$ in solid state, vapour phase and at very high temperature respectively are :-

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Q JEE MAIN 2023

Element not present in Nessler's reagent is-

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Q JEE MAIN 2023

Ion having highest hydration enthalpy among the given alkaline earth metal ions is-

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Q JEE MAIN 2023

On heating, $\mathrm{LiNO}_3$ gives how many compounds among the following? $\mathrm{Li}_2 \mathrm{O}, \mathrm{N}_2, \mathrm{O}_2, \mathrm{LiNO}_2, \mathrm{NO}_2 \mid$

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Q JEE MAIN 2023

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R)....

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Q JEE MAIN 2023

Identify the correct statements about alkali metals. A. The order of standard reduction potential ( $\mathrm{M}^{+} \mid \mathrm{M}$ ) for...

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Q JEE MAIN 2023

Which of the following reaction is correct ?

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Q JEE MAIN 2023

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion...

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Q JEE MAIN 2023

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion...

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Q JEE MAIN 2023

The number of s-electrons present in an ion with 55 protons in its unipositive state is

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Q JEE MAIN 2023

Be (OH)2 react with Sr(OH)2 to yield an ionic salt. [JEE (Main) 13-4-23_S1] [SB_M] M0derate Choose the incorrect option related...

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Q JEE MAIN 2023

Which of the following statement is correct for paper chromatography?

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Q JEE MAIN 2023

Match List-I with List-II:

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Q JEE MAIN 2023

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion...

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Q JEE MAIN 2023

The density of alkali metals is in the order

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Q JEE MAIN 2023

Given below are two statements: Statement I: Lithium and Magnesium do not form superoxide Statement II: The ionic radius of...

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Q JEE MAIN 2023

The compound which does not exist is:

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Q JEE MAIN 2023

What is the purpose of adding gypsum to cement?

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Q JEE MAIN 2023

Lime reacts exothermally with water to give A which has low solubility in water. Aqueous solution of ' $A$ '...

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Q JEE MAIN 2023

The setting time of Cement is increased by adding

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Q JEE MAIN 2023

Reaction of BeQ with ammonia and hydrogen fluoride gives 'A' which on thermal decomposition gives $\mathrm{BeF}_2$ and $\mathrm{NH}_4 \mathrm{~F}$. What...

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Q JEE MAIN 2023

Match List I with List II. Choose the correct answer from the options given below :

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Q JEE-Main_2023

Lithium aluminium hydride can be prepared from the reaction of

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Q JEE MAIN 2023

Choose the correct statement(s): A. Beryllium oxide is purely acidic in nature. B. Beryllium carbonate is kept in the atmosphere...

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Q JEE MAIN 2023

Match List I with List II Choose the correct answer form the options given below:

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Q JEE-Main_2023

The alkaline earth metal sulphate(s) which are readily soluble in water is/are:

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Q JEE MAIN 2023

Compound A reacts with $\mathrm{NH}_4 \mathrm{Cl}$ and forms a compound B . Compound B reacts with $\mathrm{H}_2 \mathrm{O}$ and excess...

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Q JEE MAIN 2023

The correct order of hydration enthalpies is (A) K+ (B) Rb+ (C) Mg2+ (D) Cs+ (E) Ca2+ Choose the correct...

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Q JEE MAIN 2023

Reaction of BeO with ammonia and hydrogen fluoride gives 'A' which on thermal decomposition gives $\mathrm{BeF}_2$ and $\mathrm{NH}_4 \mathrm{~F}$. What...

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Q JEE MAIN 2023

Match List I with List II. Choose the correct answer from the options given below :

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Q JEE MAIN 2023

Match List I with List II Choose the correct answer from the options given below:

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