Chemistry MCQs

Page No. 113

Which of the following is the formula of chrome red ?


aPb3 O4


b2Pb CO3 – Pb (OH)2


cPb Cr O4 – Pb (OH)2


dPb2O


View Answer Pb3 O4

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


aIIIA group


bIVA group


cVA group


dVIA group


View Answer IVA group

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


aSi


bAs


cTe


dNone of the above


View Answer None of the above

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


aAg


bA


cAu


dCu


View Answer Au

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


aendothermic


bexothermic


cunpredictable


dsame


View Answer exothermic

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


aA


bAg


cBoth


dNeither


View Answer Ag

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


aconstitutive property


badditive property


ccolligative property


dintrinsic property


View Answer colligative property

1 mole of electron has mass in microgram_________________?


a1.008 x 10-3


b5.5 x 10-4


c1.84 x 10-4


d1.673 x 10-3


View Answer 5.5 x 10-4

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


a1 x 10-1


b1 x 10-14


c1 x 10-7


d1


View Answer 1

Which of the following is not characteristics of reversible reaction__________________?


awhole amount of reactant does not change into product


bchemical equilibrium is established


ca catalyst changes the direction of reaction


drate of forward reaction decreases as reaction proceeds



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