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The correct statement among the followin...

The correct statement among the following is

A

All the lanthanoids are radioactive elements

B

Lanthanoid contraction is the accumulation of successive shrinkages

C

Actinoids have +4 as most common oxidation state

D

All lanthanoids are very hard metals

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AAKASH INSTITUTE ENGLISH-TEST 2-Exercise
  1. The heating of benzyl methyl ether with HI produces majorly

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  2. A biomolecule contains 2% magnesium by mass. The minimum molecular mas...

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  3. The correct statement among the following is

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  4. For the reversible reaction NaNO3(s) hArr NaNO2(s) + (1/2)O2(g) .The ...

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  5. A metal crystallizes in BCC lattice. If the diameter of metal atom is ...

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  6. Choose the incorrect statement among the following.

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  7. Two chemically non-reactive gases are separately contained in two vess...

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  8. 28 g of N2 at 299.6 K having a pressure of 2.46 atm occupy

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  9. Numerical value of universal gas constant 'R' depends on

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  10. Units of van der Waal's constants 'a' and 'b' are respectively

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  11. A system absorbs 600 J of heat and does a work of 200 J on its surroun...

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  12. For an isothermal expansion of an ideal gas

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  13. ΔH - ΔE for the combustion of gaseous propane at temperature T is

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  14. Calculate ΔH for the reaction- Al + Cr2O3 → Cr + Al2O3 When enthalpy o...

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  15. Which of the following is strongest reducing agent?

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  16. Number of electrons involved in the conversion of one nitrate ion to h...

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  17. xI^(-1) + ylO3 + zH^+ → I2 + H2O . x, y, z in the given redox reac...

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  18. Oxidation states in nitrogen can range from

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  19. Glycerol is a alcohol.

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  20. 1 g equivalent of V2O5 in the given reaction is equal to V2O5 + Zn → ...

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