1. Which of the following statements regarding alkali metals is not correct?
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(a) Alkali metals are soft and have comparatively low melting points as compared
to other metals
(b) Francium is a radioactive element
(c) Alkali metals are strongly reducing agents
(d) Sodium is used in the photoelectric cells.
2. Which of the following statement is not correct?
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(a)
Lithium forms oxide on burning in air
(b) Sodium forms peroxide on burning in air
(c) Potassium forms peroxide on burning in air
(d) Rubidium forms superoxide on burning in air.
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3. Which of the following orders regarding the melting point of alkali chlorides is true?
LiCl < NaCl < KCl < RbCl
(b)
LiCl > NaCl > KCl > RbCl
(c)
LiCl < NaCl > KCl > RbCl
(d)
LiCl > NaCl < KCl < RbCl.
kaa
(a)
4. Lithium exhibits diagonal relationship with
(a) Magnesium (c) Aluminium
(b) Calcium
(d) Strontium.
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5. Sodium is not ordinarily observed in the +2 oxidation state because of its
(a) High first ionization potential
(b) High second ionization potential
(c) High ionic radius
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(d) High electronegativity.
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6. When rubidium is reacted with oxygen, the compound formed is
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(a) RbO
(b) Rb2O
(c) Rb2O2
(d) RbO2.
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7. The metallic luster exhibited by sodium is explained by the presence of
(a) Na+ ions
(b) Conduction electrons
Free protons
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(c)
(d) A body-centred cubic lattice.
8. Ionic radii of alkali metal ions in water are in the order
Li+ > Na+ > K+ > Rb+
(b)
Li+ < Na+ < K+ < Rb+
(c)
Li+ > Na+ > K+ < Rb+
(d)
Li+ > Na+ < K+ < Rb+.
kaa
(a)
9. Which of the following ions has the highest reduction potential?
Li+
(b) Na+
(c) K+
(d) Rb+.
re.c
(a)
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10. Which of the following metals has the maximum enthalpy of sublimation?
(a)
Li
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(b) Na
(c) K
(d) Rb.
11. The number of water molecules of crystallization in sodium carbonate is
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(a) 5
(b) 10
(c) 7
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(d) 2.
12. Which of the following is known as Indian salt petre?
(a)
LiNO3
(b) NaNO3
(d) RbNO3.
kaa
(c) KNO3
13. Which of the following is not treated as primary standard in the volumetric
analysis?
re.c
(a) Sodium carbonate
(c) Sodium thiosulphate
(b) Potassium dichromate
(d) Sodium chloride.
14. Which of the following is not the minerals of potassium
(c) Kainite
(b) Carnallite
(d) Potassium feldspar.
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(a) Chile saltpeter
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15. Which of the following chemical equations is not actually observed?
(a)
(b)
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(c) 2M + 2H2O  2MOH + H2; where M is Na or K
(d) 2M + 2NH3  2MNH2 + H2; where M is Na or K.
16. Which of the following represents the composition of carnallite mineral?
bio
(a) KCl  MgCl2 6H2O
(b) K2SO4 MgSO4 MgCl2 6H2O
(c) KNO3
kaa
(d) K2O  Al2O3 6SiO2.
17. Solvay process is used for the manufacture of
(a) Na2CO3 10H2O
(b) K2CO3
(d) Na2O2.
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(c) NaOH
18. Which of the following is known as ‘baking soda’?
(a) Na2CO3 10H2O
(c) K2CO3
(d) NaOH.
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(b) NaHCO3
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19. Castner-Kelllner cell is used for the production of
(a) NaOH
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(b) Na2CO3
(c) NaHCO3
(d) NaCl.
20. Which of the following statements is not correct?
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(a) The main raw material required in Solvay process are sodium chloride and
ammonium chloride
(b) NaHCO3 is less soluble in water as compared to NH4Cl
(c) The byproduct in Solvay process is calcium chloride
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(d) Na2CO3 10H2O is commonly known as washing soda or soda ash.
21. The alkali metals are low melting. Which of the following alkali metal is expected to melt
if the room temperature rises to 30°C?
(a) Na (c) Rb
22.
(d) Cs
Alkali metals react with water vigorously to form hydroxides and dihydrogen. Which of
the following alkali metals reacts with water least vigorously?
(a) Li (c) K
re.c
(b)Na (d) Cs
23.
kaa
(b)K
The reducing power of a metal depends on various factors. Suggest the factor which
makes Li, the strongest reducing agent in aqueous solution.
(a) Sublimation enthalpy
(b)Ionisation enthalpy
(d) Electron-gain enthalpy
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(c) Hydration enthalpy
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24.
Metal carbonates decompose on heating to give metal oxide and carbon dioxide. Which
of the metal carbonates is most stable thermally?
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(a) MgCO3
(b)CaCO3
(c) SrCO3
(d) BaCO3
Which of the carbonates given below is unstable in air and is kept in CO2 atmosphere to
avoid decomposition.
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25.
(a) BeCO3
(b)MgCO3
(d) BaCO3
26.
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(c) CaCO3
Metals form basic hydroxides. Which of the following metal hydroxide is the least basic?
(b)Ca(OH)2 (d) Ba(OH)2
27.
Some of the Group 2 metal halides are covalent and soluble in organic solvents. Among
the following metal halides, the one which is soluble in ethanol is
(c) CaCl2
(d) SrCl2
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(a) BeCl2
(b)MgCl2
28.
kaa
(a)Mg(OH)2 (c) Sr(OH)2
The order of decreasing ionisation enthalpy in alkali metals is
(a) Na > Li > K > Rb
(b) Rb < Na < K < Li
(c) Li > Na > K > Rb
(d) K < Li < Na < Rb
om
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29.
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30.
The solubility of metal halides depends on their nature, lattice enthalpy and hydration
enthalpy of the individual ions. Amongst fluorides of alkali metals, the lowest solubility
of LiF in water is due to
(a) Ionic nature of lithium fluoride
(c) High hydration enthalpy for lithium ion.
(b) High lattice enthalpy
(d) Low ionisation enthalpy of lithium atom
Amphoteric hydroxides react with both alkalies and acids. Which of the following Group
2 metal hydroxides is soluble in sodium hydroxide?
w.i
(a) Be(OH)2 (c) Ca(OH)2
(b)Mg(OH)2 (d) Ba(OH)2
31.
In the synthesis of sodium carbonate, the recovery of ammonia is done by treating NH4Cl
with Ca(OH)2. The by-product obtained in this process is
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(a) CaCl2 (c) NaOH
(b)NaCl
32.
(d) NaHCO3
When sodium is dissolved in liquid ammonia, a solution of deep blue colour is obtained.
The colour of the solution is due to
(b) sodium ion
33.
kaa
(a) ammoniated electron
(c) sodium amide
(d) ammoniated sodium ion
By adding gypsum to cement
(a) setting time of cement becomes less.
(b)setting time of cement increases.
Dead burnt plaster is
re.c
34.
(c) colour of cement becomes light.
(d) shining surface is obtained.
om
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35.
Suspension of slaked lime in water is known as
(a) lime water (c) milk of lime
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(b) quick lime (d) aqueous solution of slaked lime
36.
Which of the following elements does not form hydride by direct heating with
dihydrogen?
(a)Be
(c) Sr (d) Ba
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37.
(b) Mg
The formula of soda ash is
(a)Na2 CO3.10H2O (c)Na2CO3 .2H2O
(d) Na2CO3
(b)Na2CO3.H2O
A substance which gives brick red flame and breaks down on heating to give oxygen and
a brown gas is
(a)Magnesium nitrate
(c) Barium nitrate
(b)Calcium nitrate
(d) Strontium nitrate
Which of the following statements is true about Ca(OH)2 ?
kaa
39.
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38.
(a)It is used in the preparation of bleaching powder
(b)It is a light blue solid
(c) It does not possess disinfectant property.
40.
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(d) It is used in the manufacture of cement.
A chemical A is used for the preparation of washing soda to recover ammonia. When
CO2 is bubbled through an aqueous solution of A, the solution turns milky. It is used in
white washing due to disinfectant nature. What is the chemical formula of A?
(a)Ca (HCO3)2
(c) Ca(OH)2
(d) CaCO3
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(b) CaO
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(41)
Which of the following alkaline earth metal sulphates has hydration enthalpy higher than the lattice
enthalpy ?
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(a) SrSO4
(b) MgSO4
(c) CaSO4
(d) BaSO4
(42) A compound (A) on heating gives a colourless gas and a residue that is dissolved in water toobtain (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 ...
(a) CaCO3
(b) K2CO3
(c) Na2CO3
(d) CaSO × 2H O
4
2
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(43) For alkaline metal, which of the following trends is incorrect ?
(a) Hydration enthalpy : Be > Mg > Ca > Sr
(b) Second Ionization enthalpy: Be > Mg > Ca > Sr
(c) Density : Sr > Be > Mg > Ca
(d) Atomic size : Sr > Ca > Mg > Be
bio
(44) Which of the following compounds is most stable ?
(a) LiCl
(b) LiI
(c) LiBr
(d) LiF
(45) Flame test is not given by ...
(a) Be
(b) Sr
(c) K
(d) Ca
(46) The alkaline earth metals forming ionic oxides are ...
kaa
(a) MgO
(b) BeO
(c) CaO
(d) (a) and (c)
(47) The basic character of the oxides MgO, SrO, K2O, NiO and Cs2O increases in the order :
(a) MgO > SrO > K2O > NiO > Cs2O
(c) NiO < MgO < SrO < K2O < Cs2O
(b) Cs2O < K2O < MgO < SrO < NiO
(d) K2O < NiO < MgO < SrO < Cs2O
(48) Which of the following are arranged in increasing order of solubilities ?
(c) KHCO3 < NaHCO3 < CaCO3
(49) The compound insoluble in aceticacid is ...
(a) Calcium oxide
(d) CaCO3 < NaHCO3 < KHCO3
(b) Calcium carbonate
(c) Calcium oxalate
(d) Calcium hydroxide
(b) KCl
(51) The correct order of decreasing ionic character is ...
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(50) Which of the following has the lowest melting point ?
(a) LiCl
(b) NaHCO3 < KHCO3 < CaCO3
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(a) CaCO3 < KHCO3 < NaHCO3
(c) NaCl
(d) RbCl
(a) BeCl2 > MgCl2 > CaCl2 > BaCl2
(b) BeCl2 > MgCl2 > BaCl2 > CaCl2
(c) BeCl2 > BaCl2 > MgCl2 > CaCl2
(d) BaCl2 > CaCl2 > MgCl2 > BeCl2
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(52) The highest lattice energy corresponds to ...
(a) MgO
(b) CaO
(c) SrO
(d) BaO
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(53) How many of the following s -block elements do not give characteristic colours in the flame test ?Li ,
Be, Ca, Ba, Sr, Mg, Na, K, Ba
(a) 3
(b) 4
(c) 2
(d) 5
(54) How many of the following sulphates of metals dissolve in the water ?
SrSO4, K2SO4, BeSO4, Li2SO4, MgSO4, BaSO4, Na2SO4, CaSO4, Rb2SO4
(b) 4
(c) 3
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(a) 6
(d) 5
(55) How many of the following hydroxides is/are amphoteric in character ?
CsOH, LiOH, Ca(OH)2, Be(OH)2, Mg(OH)2, Sr(OH)2, Ba(OH)2, KOH, NaOH.
(a) 1
(b) 4
(c) 5
(d) 3
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(56) Out of Li, Na, K, Rb and Cs how many of them directly form superoxides on heating with oxygen ?
(a) 5
(b) 2
(c) 3
(d) 4
(57) How many of the following metals when heated in an atmosphere of N2 gas form nitrides ?
Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba
(a) 9
(b) 5
(c) 3
(d) 6
+
(58) Which of the following is not correct for workfunction of Na ions in human body ?
kaa
(a) An important role in nerve signal transmission.
(b) Control of flow of water between cell membrane.
(c) For transport of sugar and amino acid in cell.
(d) They activate the enzyme.
(59) Which of the following is not correct ?
heat
¾
® Na 2O 2 + 2Na
(c) 2Na 2O ¾¾
673k
heat
(b) 2K 2 O ¾¾¾
® K 2 O 2 + 2K
673k
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heat
® Li 2 O 2 + 2Li
(a) 2Li 2 O ¾¾¾
673k
heat
¾
® Rb 2O 2 + 2Rb
(d) 2Rb 2O ¾¾
673k
(60) Which of the following has maximum lattice energy ?
(a) Li2O
(61)
(b) Na2O
(c) MgO
(d) BaO
Which of the following statements is/are correct for “when alkali metals are dissolved in liquid
ammonia. We get...”
(c)
(d)
A blue solution in case of dilute alkali metal ammonia solution.
If we increase cocentration of metal in ammonia then the blue colour starts changing and finally
changes to that of bronze colour.
The blue colour of the solution of alkali metal in liquid ammonia is due to excitation of free
ammoniated electrons to higher energy levels.
All the above are correct.
om
(a)
(b)
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(62) Which of the following pairs of elements possess diagonal relationship ?
(a) Li and Mg
(b) Li and Al
(c) Na and Mg
(d) Cs and Ba
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(63) Fill in the blanks with suitable option.
“The important ingredients of potland cement are dicalcium silicate ‘‘
’’ % respectively.”
silicate ... % and tricalcium aluminate ‘‘
(a) 26 %, 51%, 11%
(b) 51%, 26%, 11%
(c) 11%, 51%, 26%
(d) 26%, 11%, 51%
’’ % , tricalcium
(a) 3.83
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(64) A sample of portaland cement contain 23% SiO2, 3% Al2O3 and 2% Fe2O3 then what would
be its silica module (n) ?
(b) 28
(c) 21.73
(d) 4.6
(65) For a good quality of cement, the ratio of silica (SiO2) and alumina (Al2O3) must be between...
(b) 2.5 to 4
(c) 6 to 7.5
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(a) 3 to 5
’’ and ‘‘‘
(66) Chloro phyll and heamoglobin are complex of ‘‘
(a) Mg2+ and Ca2+
(d) 4 to 5.5
(b) Na+ and K+
(c) Mg2+ and Fe2+
’’ respectivelly..
(d) Cl– and Fe2+
(67) Which of the following is the component of most of the kidney stones ?
(a) (COO)2Ca
(b) (COONa)2
(c) (COO)2 Ba
(d) (COO)2Mg
kaa
(68) Which of the following metal ions plays an important role in muscle contraction ?
(a) K+
(b) Mg2+
(69) White enamel of our teeth is ...
(a) Ca3(PO4)2
(b) CaCl2
(c) Na+
(d) Ca2+
(c) CaF2
(d) CaBr2
(a) One mole of ammonia
re.c
(70) Two mole of magnesium nitride on reacting with an excess of water gives :
(b) Two moles of nitric acid
(c) Four moles of ammonia
(d) Three moles of ammonia
(71) Which of the following metal is used in windows of X - ray tubes ?
(a) Be
(b) Mg
(a) Magnesite
(b) Gypsum
om
(72) Which of the following is not a Mg ore ?
(c) Ba
(c) Dolomite
(d) Al
(d) Carnalite
(73) The difference of water molecules in gypsum and plaster of paris is ...
(a)
5
2
(b) 2
(c)
1
2
(d) 1
1
2
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(74) Which of the following exists in polymeric form ?
(a) AlCl3
(b) SiC
(c) BeCl2
(d) B2H6
(75) The electronic cofiguration of metal M is ls2 2s2 2p6 3s2. The formula of its oxide would be ...
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(a) MO (b) M2O
(76)
(c) M2O3
(d) MO2
The formula of carnalliteis ...
(a) KCl  MgCl2  2H2O
(b) K2O  Al2O3  6H2O
(c) KCl g MgCl2 g 6H2O
(d) Na2B4O7  10H2O
w.i
(77) When NaOH is made, the gas released at the cathode is ...
(a) Cl2
(b) H2
(c) O2
(d) H2O
(78) Choose proper option for matching column - I and column - II
(A) NaOH
(B) Na2CO3
(C) Liquid Na
(D) Caesium
Column - II
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Column - I
(c) A-Q, B-P, C-R, D-S
(Q) Coolant in nuclear reactors
(R) SO2 absorber
(S) Detergent
kaa
(a) A-R, B-S, C-Q, D-P
(P) Photo electric cells
(b) A-P, B-Q, C-R, D-S
(d) A-S, B-Q, C-P, D-R
(79) In the electrolytic separation of Li, KCl is added to LiCl ..
(a) To increase the conductivity of LiCl
(b) To lower the fusion temperature of the mixure
(d) Both (a) and (b)
(80) Molecular formula of Glauber’s salt is ...
(a) MgSO × 7H O
4
2
re.c
(c) To decrease the conductivity of LiCl
(b) FeSO 4 × 7H 2O
(c) CuSO 4 × 5H 2O
(d) Na 2SO 4 •10 H 2 O
(81) The name “Blue John” is given to which of the following compounds.
(c) Ca3(PO4)2
(d) CaO
(a) 60 gm of MgO only
om
(a) CaH2
(b) CaF2
(82) The wire of flash bulb is made of ...
(c) 45 gm of MgO and 15 gm of O2
(d) 50 gm of MgO and 10 gm of O2
(a) Mg
(b) Cu
(c) Ba
(d) Ag
(83) 30 gm of Mg and 30 gm of O2 are reacted and the residual mixure contains ...
(b) 40 gm of MgO and 20 gm of O2
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(84) Which of the following is not correct ?
(a) 4LiNO3(s) ® 2Li2O(s) + 4NO2(s) + O2(g)
(b) 2NaNO3(s) ® 2NaNO2(s) + O2(g)
(c) The oxides Li2O and MgO do not give super oxides by combining with more oxygen.
w.i
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(d) Lithium hydrogen carbonate is obtained in solid form.
(85) The number and type of bonds between two carbon atoms in calcium carbides are ...
(a) one sigma, one pi.
(b) one sigma, two pi.
(c) two sigma, one pi.
(d) two sigma, two pi
(86) Which of the following salts are composed of isoelectronic cations and anions ?
(a) NaCl
(b) MgF2
(c) CaS
(d) (b) and (c) both
(87) Which are correct statements for Be and Al ?
(a) Both are rendered passive by con.HNO3
(b) Both have sp - hybridization in their compounds.
(d) Both form hydrides
bio
(c) Both form acidic oxides
(88) Identify the correct statement ?
(a) Gypsum contains a lower percentage of calcium than plaster of paris
(b) Gypsum is obtained by heating plaster of paris
r
kaa
(c) Plaster of paris can be obtained by hydration of gypsum
(d) Plaster of paris is obtained by partial oxidation of gypsum.
(89)
Which of the following metal is used in the test of elements in organic compounds by
Lassigne test ?
(a) Li
(b) Na
(c) K
’’’
(90) The setting time of dicalcium silicates is ‘‘
(b) 1 year
o
e.c
(a) 28 days
(d) Rb
(c) 1 week
(d) 24 hour
Assertion - Reason type Questions
The questions given below contains statement - 1 (Assertion) and statement - 2 (Reason) Eachquestion
has four choices (a), (b),(c) and (d) out of which only one is correct. Choose the correctoption as under.
(a)
Statement -1 is true, statement - 2 is true
m
Statement - 2 is a correct explanation for statement - 1
(b)
Statement - 1 is true, statement - 2 is true;
Statement - 2 is not a correct explanation for statement - 1
(c)
Statement - 1 is true, statement - 2 is false
(d)
Statement - 1 is false, statement - 2 is true.
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(91) Statement-1 Alkali metals dissolve in ammonia to give blue solutions.
Statement-2 Alkali metals in liquid ammonia give solvated species of the type
[M(NH3 ) X ]+
(92) Statement-1 Sodium metal is softer than potassium metalStatement-2
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Metalic bonding in Potassium is weaker than inSodium.
(93)
Statement-1 Be(OH)2 is solublein HCl and NaOH
Statement-2 Be(OH)2 is amphoteric in nature
(94) Statement-1 Be Forrns
3–
[BeF4 ]2 – but Al forrms [AlF6 ]
w.i
Statement-2 Be doesnot have d–orbitals in the Valence shell but Al has.
(95) Statement - 1 Li 2CO3 and Na2CO3 are therally unstable.
Statement - 2 Both the carbonates are salts of large cations and large anions.
(96) Statement - 1 Metallic character of alkali metals increases on going down a group from top tobottom.
bio
Statement - 2 Ionisation enthalpy of alkali metals increases on going down from top to bottom. (97)
Statement - 1 Superoxides of alkali metals are diamagnetic.
Statement - 2 Superoxides contain the ion O2– which has one unpaired electron.
(98)
Statement - 1 Alkali metals donot impart colour to the flame.
Statement - 2 Their ionization enthalpies are very low.
(99) Statement - 1 Sodium cannot be obtained by chemical reduction of its ore.
kaa
Statement - 2 Sodium is one of the strongest reducing agent.
(100) Statement - 1 Beryllium hydroxide becomes soluble in excess alkali forming beryllate ion [Be(OH)4]2Statement - 2 Beryllium ion has greater tendency to form complexes.
re.c
om
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1.
d
2.
c
3.
c
4.
a
5.
6.
b
7.
b
8.
a
9.
a
10.
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12.
b
13.
c
14.
a
15.b
16.
a
17.
a
18.
b
19.
a
20. A
21d
22 a
23 c
24 d
25 a
26 a
27 a
28 c
29b
30a
31 a
32a
33b
34a
35c
36a
37 d
38 b
c
a
b
d
c
a
c
b
a
d
d
b
a
d
d
(85)
(86)
(87)
(88)
(89)
(90)
(91)
(92)
(93)
(94)
(95)
(96)
(97)
(98)
(99)
b
d
a
a
b
a
b
d
a
a
c
c
d
d
a
(100)
39a
40c
b
re.c
(70)
(71)
(72)
(73)
(74)
(75)
(76)
(77)
(78)
(79)
(80)
(81)
(82)
(83)
(84)
b
kaa
a
c
b
d
a
c
d
a
a
d
b
c
a
d
c
a
bio
(41) b
(42) a
(43) b
(44) d
a (45) a
(46) d
(47) c
(48) d
(49) c
(50) a
(51) a
(52) a
(53) c
(54) a
(55)
(56)
(57)
(58)
(59)
(60)
(61)
(62)
(63)
(64)
(65)
(66)
(67)
(68)
(69)
b
11.
w.i
a
a
a
ANSWER
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