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AAKASH SERIES-D-BLOCK ELEMENTS-OBJECTIVE EXERCISE-4 (ASSERTION (A) & REASON (R) TYPE QUESTIONS )
- (A) Tungsten has a very low melting point (R) Tungsten is a covalent...
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- (A) Cu^+ ion is coloured in aqueous solutions (R) Four water molecul...
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- (A) Equivalent mass of KMnO4 is equal to one-third of its molecular ma...
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- (A) Ce^(4+) is used as an oxidising agent in volumetric analysis. (R...
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- (A) In MnO(4)^(-) the M-O bonds are ionic . (R) The oxidation number ...
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- (A) Mn atom loses ns electrons first during ionization as compared to ...
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- (A) Aqueous solution of FeCl3 is acidic due to cationic hydrolysis ...
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- (A) Mercury is liquid at room temperature (R) In mercury, there is ...
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- (A) The purple colour of KMnO4 is due to the charge transfer transitio...
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- (A) The highest oxidation state of Os is +8. (R) Osmium is a 5d elem...
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- (A) Atomic size of silver is almost equal to that of gold. (R) d sub...
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- (A) Cr^(+2) is strong reducing agent in aqueous solution. (R) Cr^(+2...
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- (A) Potassium dichromate is used as a primary standard in volumetric a...
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- (A) Potassium ferrocyanide and potassium ferricyanide both are paramag...
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- (A) Zn^(+2) is diamagnetic (R) The electrons are lost from 4s orbita...
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- (A) d block elements are transitioned between s-block metals and p-blo...
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- (A) E.C of Pd is [Kr] 4d^(8)5s^(2) (R) Palladium contains 8e^(-) in ...
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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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