MCQs on Hydrogen, Alkali and Alkaline Earth Metals

Set of Important MCQs on the Chemistry of Hydrogen, Alkali And Alkaline Earth Metals in inorganic chemistry for the preparation of tests.

Dolomite is a mineral whose formula is

1. CaCO₃
2. MgCO₃
3. CaCO_3.MgCO₃
4. CaSO₄

Question’s Answer: CaCO_3.MgCO₃

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Which of the mentioned gas is lightest?

1. Dihydrogen
2. Helium
3. Dinitrogen
4. Dioxygen

Question’s Answer: Dihydrogen

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According to recent views which is the accurate representation of hydrated proton in aqueous solutions?

1. H⁺
2. H₉O₅⁺
3. H₉O₄⁺
4. H₃O⁺

Question’s Answer: H₉O₄⁺

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Which isotope of hydrogen is/are radioactive in nature?

1. Protium and deuterium
2. Tritium only
3. Tritium and deuterium
4. Only deuterium.

Question’s Answer: Tritium only

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What is the composition of Whetherite?

1. BaSO₄
2. BaCO₃
3. SrSO₄
4. None of A, B, and C

Question’s Answer: BaCO₃

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Dolomite is a carbonate of which of the following?

1. Na and Ba
2. Ca and Mg
3. K and Ca
4. Mg and Sr

Question’s Answer: Ca and Mg

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Which metal can produce dihydrogen gas by reaction with dil. H₂SO₄?

1. Ag
2. Cu
3. Fe
4. Pt.

Question’s Answer: Fe

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Which type of elements form ionic hydrides?

1. Transition elements
2. Metalloids
3. Elements with high electronegativity
4. Elements with high electro positivity

Question’s Answer: Elements with high electro positivity

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Which is the process of adsorption of hydrogen on palladium?

1. Syneresis
2. Occlusion
3. Diffusion

Question’s Answer: D. Erosion

Occlusion

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Newly born hydrogen is known as ______.

1. Protiumat
2. Nascent hydrogen
3. Atomic hydrogen
   D. Heavy hydrogen

Question’s Answer: Nascent hydrogen

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How three isotopes of hydrogen differ from one another?

1. Atomic number
2. Number of protons
3. Nuclear charge
4. Nuclear mass

Question’s Answer: Nuclear mass

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Aluminum reacts with boiling water to liberate dihydrogen gas along with the formation of __________ .

1. Aluminum oxide
2. Aluminum hydroxide
3. Aluminum suboxide
4. Aluminum superoxide

Question’s Answer: Aluminum oxide

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Which of the mentioned is an allotrope of hydrogen?

1. 0-H2
2. p-H₂
3. Both A and B.
4. None of A, B, and C

Question’s Answer: Both A and B.

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When steam is passed over red hot coke. Which products will form?

1. Hydrogen and carbon dioxide
2. Mixture of hdyrogen and carbon monoxide
3. Mixture of hydrogen and
4. Heavy hydrogen oxygen

Mixture of hdyrogen and carbon monoxide

What is the accurate order of reactivity among:

1. (atomic hydrogen);
2. (Dihydrogen)
3. (Nascent hydrogen) is
4. 1>2>3
5. 1>3>2
6. 2>3>1
7. 3>2>1

Question’s Answer: 1>3>2

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Which elements do not produce hydrogen on treatment with caustic soda?

1. Zn
2. Mg
3. AI
4. Sn

Question’s Answer: Mg

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The metal which produces hydrogen on 30 treatment with acid as well as caustic soda

1. Zn
2. Mg
3. Fe
4. None of A, B, and C

Question’s Answer: Zn

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What is the structure of H₂O_2?

1. Planar
2. Non-planar
3. Spherical
4. Linear

Question’s Answer: Non-planar

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Water gas is a mixture of  __ and  _____ .

A CO₂ and H₂

1. CO and H
2. CO₂ and H₂O
3. CO and N₂

Question’s Answer: CO and H

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Which of the mentioned is not an alkali metal?

1. Potassium
2. Francium
3. Sodium
4. Strontium

Question’s Answer: Strontium

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Which is the lightest alkali metal?

1. Lithium
2. Sodium
3. Rubidium
4. Caesium

Question’s Answer: Lithium

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The most abundant alkali metal is

1. Potassium
2. Rubidium
3. Sodium
4. Lithium

Question’s Answer: Sodium

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What is the accurate order of ionization energies of alkali metals?

1. Li > Na > K > Rb
2. Na > K > Rb > Li
3. Rb > K > Na > Li
4. Rb > K > Li> Na

Question’s Answer: Li > Na > K > Rb

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In which of the mentioned characteristics does hydrogen looks like halogens?

1. Hydrogen is the lightest gas
2. H atoms contains one electron each
3. Hydrogen forms ionic hydrides with alkali metals
4. Hydrogen has three isotopes.

Question’s Answer: Hydrogen forms ionic hydrides with alkali metals

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In which of the following property hydrogen does not resemble alkali metals?

1. Tendency to form cation
2. Nature of oxide
3. Combination with halogens
4. Reducing character.

Question’s Answer: Nature of oxide

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Which is the colour imparted by lithium to the flame?

1. Golden yellow
2. Grassy green
3. Violet
4. Red.

Question’s Answer: Red

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What is the only oxidation state of alkali metals in their compounds?

1. +1
2. +2
3. – 1
4. 0

Question’s Answer: +1

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Which of the mentioned is true for dilute solution of Na in liq. ammonia?

1. It is blue
2. It shows conductance
3. It is paramagnetic
4. None of A, B, and C

Question’s Answer: None of A, B, and C

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Formula of gypsum is

1. CaSO₄
2. CaSO₄.2H₂O
3. 2CaSO₄.H2O
4. CaSiO₃

Question’s Answer: CaSO₄.2H₂O

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Which of the mentioned is true for concentrated solution of Na in liq. ammonia?

1. It is deep blue
2. The solution is non-conducting
3. It is copper colored.
4. None of A, B, and C

Question’s Answer: It is copper colored

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Potassium crystallizes in a body centered lattice. Hence, the coordination number of potassium in potassium metal is

1. 6
2. 8
3. 4
4. 12

Question’s Answer: 8

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Sodium reacts more vigorously than lithium because

1. It is a metal
2. It has higher atomic mass
3. It is more electronegative
4. It is more electropositive

Question’s Answer: It is more electropositive

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The alkali metal that reacts with nitrogen directly to form nitride is

1. Na
2. K
3. Rb
4. Li

Question’s Answer: Li

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The most reactive alkali metal among the following is

1. Li
2. Na
3. Rb
4. Cs

Question’s Answer: Cs

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Potassium reacts with excess of oxygen to form

1. K₂O
2. K₂O₂
3. K₂O₃
4. KO₂

Question’s Answer: KO₂

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Sodium reacts with excess of oxygen to form

1. Na₂O
2. NaO₂
3. Na₂O₂
4. NaO

Question’s Answer: Na₂O₂

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Which among the following is insoluble in water?

1. LiOH
2. NaOH

с. кон

1. RbOH

Question’s Answer: LiOH

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Which among the following is least soluble in water?

1. NaF
2. LiF
3. KF
4. CsF

Question’s Answer: LiF

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Which of the mentioned reacts with excess oxygen to form a normal oxide?

1. Li
2. Na
3. K
4. Rb

Question’s Answer: Li

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What is the accurate order of reducing power of alkali metal?

1. Li > Na>K> Rb
2. Na > K > Rb> La
3. Cs >K> Na > La
4. La >C > K > Na

Question’s Answer: Li > Na>K> Rb

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Lithium shows diagonal relationship with which one?

1. Beryllium
2. Sodium
3. Magnesium
4. Calcium

Question’s Answer: Magnesium

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Among alkali metals, Which is the least metallic element?

1. Li
2. Na
3. Ce
4. Rb

Question’s Answer: Li

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In which of the following properties, hydrogen does not show resemblance with halogena.

1. Electropositive character
2. Electronegative character
3. Neutral nature of H₂O
4. Atomicity.
5. 1 and 3
6. just 1
7. 2 and 3
8. 3 and 4.

Question’s Answer: 1 and 3

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Which of the mentioned compounds liberates CO₂ on heating?

1. Li₂CO₃
2. Na₂CO₃
3. K₂CO₃
4. All liberate CO₂ on heating

Question’s Answer: Li₂CO₃

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Which of the mentioned has the maximum tendency to form complexes?,

1. K
2. Rb
3. Na
4. Li

Question’s Answer: Li

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Baking powder has one of the following constituent

1. NaOH
2. NaHCO₃
3. KOH
4. Na₂CO₃

Question’s Answer: NaHCO₃

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The formula of nitre is

1. KNO
2. RbNO₃
3. NaNO
4. LiNO

Question’s Answer: KNO

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Which of the mentioned elements has the highest melting point?

1. Magnesium
2. Calcium
3. Strontium
4. Beryllium

Question’s Answer: Beryllium

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Which of the mentioned is the most abundant alkaline earth metal?

1. Be
2. Mg
3. Ca
4. Sr

Question’s Answer: Ca

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Which of the mentioned alkaline earth metals occurs in radioactive form in nature?

1. Ca
2. Mg
3. Ba
4. Ra

Question’s Answer: Ra

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Which of the elements of groups IIA has the highest value of IE?

1. Mg
2. Be
3. Ca
4. Sr

Question’s Answer: Be

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Which of the mentioned is the strongest reducing agent?

1. Be
2. Mg
3. Ca
4. Sr

Question’s Answer: Be

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Which of the mentioned elements has the highest value of IE?

1. Na
2. K
3. Mg
4. Ca

Question’s Answer: Mg

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Metallic magnesium is obtained by

1. Reduction of MgO with coke
2. Electrolysis of an aqueous solution of MgCl₂
3. Electrolysis of molten MgCl₂
4. Displacement of magnesium by iron from MgCl₂ solution

Question’s Answer: Electrolysis of an aqueous solution of MgCl₂

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Electrometallurgy is applicable to which one metal

1. Fe
2. Na
3. Pb
4. Ag

Question’s Answer: Na

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Drying agent which reacts with CO₂ and removes water vapors is

1. CaO
2. CaCl₂
3. CaCO₃
4. Ca(NO₃) ₂

Question’s Answer: CaO

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Beryllium shows diagonal relationship with

1. Mg
2. Na
3. Al
4. B

Question’s Answer: Al

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Which of the mentioned is the weakest base?

1. KOH
2. NaOH.
3. LiOH
4. RbOH

Question’s Answer: LiOH

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Magnesium burns in air to give

1. MgO
2. MgCO₃
3. Mg₃N²
4. Both A. and C

Question’s Answer: Both A. and C

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Thermal stability of MNO, (M-alkali metals)

1. Decreases down the group
2. Increases down the group
3. Does not follow regular pattern
4. Remains almost similar

Question’s Answer: Increases down the group

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The formula of bleaching powder is

1. CaOCl₂
2. CaClO₃
3. Ca(ClO₃)₂
4. CaOCl

Question’s Answer: CaOCl₂

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Which of the mentioned carbonates decomposes at the highest temperature?

1. MgCO₃
2. CaCO₃
3. SrCO₃
4. BaCO₃

Question’s Answer: BaCO₃

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The wire of flash bulb is made up of

1. Cu
2. Ag
3. Mg
4. Ba

Question’s Answer: Mg

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Which of the mentioned metals is the most abundant in the earth’s crust?

1. Mg
2. Na
3. Ca
4. K

Question’s Answer: Ca

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Of the following the commonly helpful and used in the laboratory desiccator is

1. Anhyd. Na₂CO₃
2. Anhyd. CaCl₂
3. Dry NaCl
4. None of A, B, and C.

Question’s Answer: Anhyd. CaCl₂

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Setting of Plaster of Paris involves

1. Oxidation with atmospheric oxygen
2. Combination with atmospheric CO2
3. Dehydration
4. Hydration to yield another hydrate

Question’s Answer: Hydration to yield another hydrate

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The most common oxidation state of alkaline earth metals is

1. + 1
2. +2
3. -2
4. -1

Question’s Answer: +2

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Which of the mentioned elements has the highest density?

1. Mg
2. Na
3. K
4. Rb

Question’s Answer: Mg

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When calcium is heated in the flame of a Bunsen burner, the color imparted to the flame is

1. Golden yellow
2. Brick red
3. Crimson red
4. Grassy green

Question’s Answer: Brick red

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Which of the mentioned elements with excess oxygen to form peroxides?

1. Ca
2. Mg
3. Li
4. Ba

Question’s Answer: Ba

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Lime water is an aqueous solution of ______ .

1. MgSO₃
2. Ca(OH)₂
3. CaCO₃
4. CaSO₄

Question’s Answer: Ca(OH)₂

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Which of the mentioned elements does not impart any characteristic colour to the flame?

1. Ca
2. Mg
3. Ba
4. Sr

Question’s Answer: Mg

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Silvite is an ore of

1. Ca
2. Mg
3. Ba
4. K

Question’s Answer: K

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Barite is an ore of

1. Ca
2. Mg
3. Ba
4. K

Question’s Answer: Ba

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Magnesite is an ore of _____.

1. Ca
2. Mg
3. Ba
4. K

Question’s Answer: Mg

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Calcite is an ore of which of the following?

1. Ca
2. Mg
3. Ba
4. K

Question’s Answer: Ca

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Dolomite is an ore of which of the following?

1. Ca
2. Mg
3. Ba
4. Both Ca and Mg

Question’s Answer: Both Ca and Mg

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Halite is a chemical name of which of the following?

1. KCI
2. NaCl
3. MgCl₂
4. SrCl₂

Question’s Answer: NaCl

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Mg is present in

1. Ascorbic acid
2. Haemoglobin
3. Vitamin E
4. Chlorophyll

Question’s Answer: Chlorophyll

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Which of the sulfate is helpful and used in diagnosis of stomach ulcer?

1. SrSO₄
2. BaSO₄
3. CaSO₄
4. BeSO₄

Question’s Answer: BaSO₄

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Down’s cell is helpful and used to prepare which of the following?

1. BaSO4
2. Na
3. NaOH
4. NaHCO3

Question’s Answer: Na

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Which is produced at cathode during the electrolysis of brine in Nelson’s cell?

1. Na
2. H2
3. Cl2
4. 02

Question’s Answer: H2

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What is the formula of Epsom salt?

4. CaSO₄.7H₂O
5. SrSO₄.7H₂O
6. BaSO₄.7H2O
7. MgSO₄.7H2O

Question’s Answer: MgSO₄.7H2O

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Which of the mentioned oxides is

1. Cao
2. BaO
3. BeO
4. MgO

Question’s Answer: BeO

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Which of the mentioned hydroxides is most stable?

1. Mg(OH)₂
2. Ca(OH)₂
3. Sr(OH)₂
4. Ba(OH)₂

Question’s Answer: Ba(OH)₂

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In which of the mentioned reactions does dihydrogen works as  oxidising agent?

1. Ca + Hy à
2. H₂+O à
3. H₂+ F à
4. CuO+ H à

Question’s Answer: Ca + Hy  à

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Which of the mentioned is not true as compared with alkaline earth metals?

1. Alkali metals are more reactive
2. Alkali metals have lower density
3. Alkali metals are more electropositive
4. Alkali metals have stronger metallic bonds

Question’s Answer: Alkali metals have stronger metallic bonds

More Inorganic Chemistry MCQs

1. Chemical Bonding MCQs
2. Acids and Bases in inorganic chemistry MCQs
3. Boron And Aluminum MCQs
4. Carbon and Silicon MCQs
5. Hydrogen, Alkali, and Alkaline Earth Metals MCQs
6. D-Block Elements MCQs [Chemistry]
7. F-Block Elements MCQs
8. Halogens MCQs
9. Inert Gases MCQs
10. Nitrogen and Phosphorus MCQs
11. Oxygen and Sulphur MCQs
12. Experimental Inorganic Chemistry MCQs
13. Periodic Classification Of Elements And Periodicity Of Properties MCQs
14. CHEMISTRY MCQs From all subjects of  Chemistry

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