K2Cr2O7/H2SO4 generate____________________?
K2Cr2O7/H2SO4 generate____________________?
A. Oxygen
B. Hydrogen
C. Nascent oxygen[O]
D. Nascent hydrogen[H]
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Inner transition elements are called _________________?
Inner transition elements are called _________________?A. Lanthanides
B. Actinides
C. Rare earth metals
D. AllElements of group IA IIA are _________________?
Elements of group IA IIA are _________________?A. Electronegative
B. Electropositive
C. Neutral
D. IA is electropositive while IIA is electronegativeLead accumulators are_______________?
Lead accumulators are_______________?A. secondary cell
B. primary cell
C. voltaic cell
D. both A & CWhich of the following statements is false about transition metals?
Which of the following statements is false about transition metals?A. They form complexes
B. They show variable valency
C. All transition metal compounds are paramagnetic
D. They form coloured ionsAqueous solution of borax above 62°C gives crystals of________________?
Aqueous solution of borax above 62°C gives crystals of________________?A. Na2B4O7.4H2O
B. Na2B4O7.5H2O
C. Na2B4O7.2H2O
D. Na2B4O7.10H2OWhat is the relative rate of effusion of CO and CO2 ?
What is the relative rate of effusion of CO and CO2 ?A. CO is 1.25 times faster than CO2
B. CO is 3.75 times faster than CO2
C. CO is 1.25 times faster than CO
D. Both diffuse at the same rate