Chemistry MCQs

Page No. 113

Which of the following is the formula of chrome red ?


aPb3 O4

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b2Pb CO3 – Pb (OH)2

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cPb Cr O4 – Pb (OH)2

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dPb2O

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View Answer Pb3 O4

Across short period the melting and boiling point increase upto __________________?


aIIIA group

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bIVA group

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cVA group

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dVIA group

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View Answer IVA group

Which of the elements do not fall in stair case of the modern periodic table__________________?


aSi

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bAs

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cTe

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dNone of the above

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View Answer None of the above

Which of following metals can be displaced by all other metals from its solution ?


aAg

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bA

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cAu

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dCu

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View Answer Au

In which of the following type of reactions energy of reactant is greater than energy of product________________?


aendothermic

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bexothermic

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cunpredictable

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dsame

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View Answer exothermic

At which electrode the reduction of the solution is occurring in Al-Ag cell_____________?


aA

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bAg

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cBoth

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dNeither

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View Answer Ag

The use of antifreeze in the automobile radiator is an important application of__________________?


aconstitutive property

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badditive property

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ccolligative property

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dintrinsic property

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View Answer colligative property

1 mole of electron has mass in microgram_________________?


a1.008 x 10-3

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b5.5 x 10-4

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c1.84 x 10-4

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d1.673 x 10-3

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View Answer 5.5 x 10-4

A solution has pH = 0 its H+ ion concentration is__________________?


a1 x 10-1

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b1 x 10-14

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c1 x 10-7

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d1

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View Answer 1

Which of the following is not characteristics of reversible reaction__________________?


awhole amount of reactant does not change into product

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bchemical equilibrium is established

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ca catalyst changes the direction of reaction

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drate of forward reaction decreases as reaction proceeds

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