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AAKASH SERIES-D-BLOCK ELEMENTS-OBJECTIVE EXERCISE-4 (ASSERTION (A) & REASON (R) TYPE QUESTIONS )
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- (A) Sc exhibit variable oxidation states. (R) Sc is not a transition...
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- (A) : Cu^(+2)(aq) is more stable than Cu^(+)(aq) (R): Heat of hydrat...
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- (A) Cr^(+2) is reducing in nature. (R) Half filled t(zg) level in Cr...
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- (A) Many copper(I) compounds are unstable in aqueous solution. (R) ...
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- (A) The number of unpaired electrons in the following gaseous ion Mn^...
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- (A) MnO(4)^(-1) is strong oxidizing agent. (R) Mn^(+2) is stable wit...
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- (A) The free gaseous Cr atom has six unpaired electrons. (R) Half fi...
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- (A) E^(@) for Mn^(+3)//Mn^(+2) is more positive than Cr^(3+)//Cr^(+2) ...
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- (A) K2Cr2O7 is used as primary standard in volumetric analysis. (R) ...
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- (A) Solution of Na2CrO4 in water is intensely coloured. (R) Oxidatio...
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- (A) Elements of 4f sries are called Lanthanides (R) Lanthanum Belong...
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- (A) Silver. Gold and platinum are precious metals. (R) Silver glod a...
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- (A) Zn,Cd^(-) and Hg of group 12 are transition metals (R) Partiall...
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- (A) Mn & Hg exist in simple crystal structures. (R) Both Mn & Hg are...
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- (A) Metals of 4d and 5d series have greater enthalpies of atomization ...
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- (A) The enthalpy of atomization of zinc is the highest in 3d series. ...
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- (A) Second ionization enthalpies of Cr and Cn are very low (R) Both ...
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- (A) The calculated spin only magnetic moment of Ti^(+2) is 1.73 BM. ...
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- (A) Ni^(+2) salts are pink in colour (R) Ni^(+2) absorb light in IR ...
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