concentrated sulphuric acid is added following by heating to each of following test tube . (i) cane sugar , (ii) sodium bromide (iii) copper turnings ,(iv) sulphur powder (v) potassium chloride Identify in which of the above test tube the following change will be observed. support your answer with the help of a chemical equation . a) formation of a black substance b) evolution of brown gas c) evolution of colourless gas d) formation of a brown substance which on dilution become blue e) disappearance of yellow powder along with evolution of colourless gas.
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1) In the normal spinel structure, the oxide ions are arranged in CCP pattern. The Zn2+ ions
occupy one eighth of the tetrahedral holes and one half of the octahedral voids are
occupied by Al3+. Give the formula of the spinel.
2) Metallic gold crystallizes in FCC lattice. How many nearest neighbours do each gold atom has?
3) When a crystal of NaCl is heated in sodium vapour, it acquires a yellow colour. The yellow
colour is due to non stoichiometric defect. Name the defect.
4) In the face centered cubic arrangement of A and B atoms where A atoms are at the corner of
the unit cell and B atoms at the face centres. One of the A atom is missing from one corner in
the unit cell. What is the simplest formula of the compound?
5) For the structure given below identify the site marked as S.
6) In BCC lattice, what are the numbers of the nearest and next nearest neighbours?
7) What type of magnetism is shown by the substance whose magnetic moments are aligned as
given below:
99;9;99
8) A solid ‘X’ conducts electricity in solid state as well as in molten state. Its conductance
decreases with increase in temperature. Identify the solid X.
9) In Chromium(III) Chloride, CrCl3, chloride ions have cubic close packed arrangement and Cr(III)
ions are present in the octahedral holes...
Plz mark it as brainliest
occupy one eighth of the tetrahedral holes and one half of the octahedral voids are
occupied by Al3+. Give the formula of the spinel.
2) Metallic gold crystallizes in FCC lattice. How many nearest neighbours do each gold atom has?
3) When a crystal of NaCl is heated in sodium vapour, it acquires a yellow colour. The yellow
colour is due to non stoichiometric defect. Name the defect.
4) In the face centered cubic arrangement of A and B atoms where A atoms are at the corner of
the unit cell and B atoms at the face centres. One of the A atom is missing from one corner in
the unit cell. What is the simplest formula of the compound?
5) For the structure given below identify the site marked as S.
6) In BCC lattice, what are the numbers of the nearest and next nearest neighbours?
7) What type of magnetism is shown by the substance whose magnetic moments are aligned as
given below:
99;9;99
8) A solid ‘X’ conducts electricity in solid state as well as in molten state. Its conductance
decreases with increase in temperature. Identify the solid X.
9) In Chromium(III) Chloride, CrCl3, chloride ions have cubic close packed arrangement and Cr(III)
ions are present in the octahedral holes...
Plz mark it as brainliest
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