1) Potential of SHE is considered as a. zero b. unity c. constant d. multiple of 1
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2) Chemical used in salt bridge is a. KOH b. KCI c. KNO3 d. KBr
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3) Electrode potential of Zn is a. oxidation b. reduction c. oxidation-reduction d. depends on the nature of the coupled electrode
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4) List of elements based on hydrogen scale is called a. periodic table b. groups c. periods d. electrochemical series
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5) The element that act as anode always have _______ position in electrochemical cell a. higher b. lower c. in middle d. no effect of position
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6) In galvanic cell Zn acts as an anode so its value of standard reduction potential in comparison to coupled electrode would be a. greater b. lesser c. sum of reduction and oxidation potentials d. none
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7) Greater value of standard reduction potential greater will be tendency a. to get oxidized b. to get reduced c. to accept electrons d. both b and c
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8) Greater value of standard reduction potential smaller will be tendency a. to form positive ions b. to form negative ions c. gain electrons d. all are possible
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9) Secondary cell is a. rechargeable b. non rechargeable c. electrolytic cell d. Daniel cell
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10) Lead accumulators are a. secondary cell b. primary cell c. voltaic cell d. both a & c
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11) Density of H2SO4 in lead accumulator is a. 1.25g/cm3 b. 1.3g/cm3 c. 1.20g/cm3 d. 1.15g/cm3
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12) Capacity of one lead accumulator cell is a. 1.5 volts b. 2 volts c. 3 volts d. 1 volts
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13) In alkaline battery the anode is made up of a. MnO2 b. Zn c. AgO2 d. cadmium
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14) The strength of solution of an element whose electrode potential is to be measured is a. 2M b. 1N c. 1m d. 1M
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15) Apparent charge on atom in molecule is a. valency b. coordination number c. oxidation number d. charge number
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16) Voltaic cell is a a. irreversible cell b. reversible cell c. alkaline cell d. all of the above
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17) In K2Cr2O7 the oxidation number of chromium is a. 7 b. 6 c. -7 d. -6
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18) Percentage of sulphuric acid in lead accumulator is a. 40% b. 25% c. 30% d. 50%
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19) The reduction potential Zn is a. 0.76 b. -0.76 c. -0.55 d. 0.55
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20) The half cells are interconnected through a. wire b. salt bridge c. electric circuit d. no connection exists
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21) The word Alkali means a. Base b. Basic salt c. Ashes d. Spirit
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22) Formula of Chile saltpetre is a. NaNO3 b. CaCO3 c. Ba (NO3)2 d. NH4Cl
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23) The oxides of beryllium BeO is a. Acidic b. Basic c. Amphoteric d. Neutral
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24) Which element is necessary for normal leaf development? a. Si b. Ba c. Mg d. Ca
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25) Li is different from its family members due to a. small size b. high charge density c. less electropositivity d. all of the above
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26) Carbonates of lithium are not stable like that of sodium due to a. Low electronegativity b. Low electropositivity c. Low charge density d. Not known yet
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27) Nitrates of which pair of elements give different products on thermal decomposition? a. Na K b. Mg Ca c. Li Na d. Li Ca
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28) Which one of the following is not an alkali metal? a. Francium b. Caesium c. Rubidium d. Radium
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29) Which of the following sulphates is not soluble in water? a. Sodium sulphate b. Potassium sulphate c. Zinc sulphate d. Barium sulphate
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30) The element cesium bears resemblance with a. Ca b. Cr c. Both of the above d. None of the above
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31) The ore CaSO4.H2O has the general name a. Gypsum b. Dolomite c. Calcite d. Plaster of Paris
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32) Downs cell is used to prepare a. Sodium carbonate b. Sodium bicarbonate c. Sodium metal d. Sodium hydroxide
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33) Ammonia may be prepared by heating ammonium chloride with a. Water b. NaCl c. Aqueous sodium hydroxide d. H2SO4
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34) Crystals of Na2CO3. 10H2O when exposed to air a. Lose water and remain solid b. Gain water and remain solid c. Gain water and become liquid d. Remains unchanged
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35) Which one of the following substances conducts electricity by the movement of ions? a. Graphite b. Copper c. Molten sodium chloride d. Mercury
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36) Which one of the following gives white precipitate with aqueous solution of BaC?2? a. NaHCO3 b. NaNO3 c. Na2CO3 d. Na2CrO4
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37) Which one of the following carbonate is water insoluble? a. Na2CO3 b. K2CO3 c. (NH4)2CO3 d. CaCO3
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38) The deliquescence is a property in which a solid a. Absorbs moisture and remains solid b. Absorbs moisture and turns to liquid form c. Loses water of crystallization d. Increases the number of water of crystallization
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39) In diaphragm cell hydrogen is discharged by the reduction of a. Water b. HCI c. Na+ d. NaCl
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40) In diaphragm cell level of brine in anode compartment is kept slightly higher which prevents a. Hydroxide ions to reach anode b. Chlorine gas to mix c. Cathode to decay d. All of the above
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41) Gypsum is applied to the soil as a source of a. Ca and P b. S and P c. Ca and S d. we could not apply
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42) Alkali and alkaline earth metals impart colours when heated over burner. It is due to a. Smaller electronegativity of alkali metals b. Smaller ionic radius of these metals c. De-excitation of electrons from higher energy levels to low energy level d. Excitation of electrons from low energy levels to higher energy levels
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43) Which one of the following alkali metals forms only normal oxide when it reacts with O2? a. Lithium b. Sodium c. Potassium d. Rubidium
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44) First ionization potential of alkaline earth metal is greater than alkali metals because a. They are more reactive b. They have greater atomic radii c. They have smaller atomic sizes d. All
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45) Which one of the following pairs shown diagonal relationship in the periodic table? a. Sodium and Lithium b. Lithium and magnesium c. Lithium and beryllium d. Boron and Beryllium
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46) NaOH is named as caustic soda because a. It corrodes the organic tissues b. It is used in soda water c. It reacts with chlorine gas d. It reacts with fats to form soap
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47) Sodium is not observed in +2 oxidation state because of its a. high first ionization potential b. high second ioniation potential c. high ionic radius d. high electronegativity
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48) Carnalite has chemical formula a. KCI b. KCI.MgCl2.6H2O c. Na2B4O7.10H2O d. CaCO3.MgCO3
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49) Magnesium metal does not burn in the vessel containing a. N2 b. O2 c. N2 and O2 d. Ne
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50) Electrolysis of dilute solution of NaCl results at the anode a. sodium b. hydrogen c. chlorine d. oxygen
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