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The hottest part of the flame of a Bunse...

The hottest part of the flame of a Bunsen burner is the

A

Blue Zone

B

Zone of complete combustion

C

Zone fo partial combustion

D

All parts of the flame are equally hot.

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The correct Answer is:
B
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Apparatus: Pairs of tongs or spatula, knife, burner, etc. Chemicals: Samples of aluminium, copper, iron, lead, magnesium, zinc and sodium. Procedure: Hold the sample of each of the above metals at the top of the flame of a burner with the help of a pair of tongs, or a spatula What is the colour of the flame while the metal is burning on the flame?

What is the colour of the flame on heating potassium in the flame of a Bunsen burner?

RESONANCE-QUALITATIVE ANALYSIS (ANION)-Exercise-1
  1. In which of the following reactions a brown coloured gas is evolved ?

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  2. Why is concentrated HCl used to dissovle the given metal salt in the f...

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  3. The hottest part of the flame of a Bunsen burner is the

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  4. Metal (M) shows crimson red colour in flame test and its halide is del...

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  5. In Borax bead test, metal oxides react with B(2)O(3) and form a colour...

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  6. Which does not give borax bead test?

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  7. In the Borax bead test of Co^(2+), the blue colour of bead is due to t...

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  8. A salt gives white residue in charcoal cavity test but in cobalt nitra...

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  9. Which of the following anions are identified by dil. HCl :

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  10. Two inorganic compounds A and B were heated in a dry test tube. A evol...

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  11. If addition of conc. H(2)SO(4) is made to an unknown salt, a colourles...

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  12. A gas turns lime water milky and acidified K(2)Cr(2)O(7) solution gree...

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  13. A gas has smell like rotten egg and turns lead acetate paper black. Th...

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  14. Anion (X^(2-)) is :

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  15. The acidic solution of a salt produced a deep blue colour with starch ...

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  16. Sulphide ion reacts with [Fe(CN)(5)NO] to form a purple coloured compo...

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  17. Which of the following pair of anions are identified by conc. H(2)SO(4...

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  18. Which of the following anion behaves in a different manner than other ...

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  19. Which of the following reagents turns white precipitate of AgCl yellow...

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  20. A Unknown salt (S) when heated with dil H(2)SO(4) does not evolve brow...

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