Home
Class 11
CHEMISTRY
Dimethyl glyoxime in a suitable solvent ...

Dimethyl glyoxime in a suitable solvent was refluxed for 10 minutes with pure pieces of nickel sheet, it will result in

A

red ppt

B

blue ppt

C

yellow ppt

D

no ppt

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SALT ANALYSIS

    GRB PUBLICATION|Exercise K: Vth and Vth Group Cations|10 Videos

  • SALT ANALYSIS

    GRB PUBLICATION|Exercise L: Miscellaneous|40 Videos

  • SALT ANALYSIS

    GRB PUBLICATION|Exercise I. IIIrd Group Cations|36 Videos

  • S BLOCK ELEMENTS

    GRB PUBLICATION|Exercise SUBJECTIVE TYPE|9 Videos

  • THERMODYNAMICS

    GRB PUBLICATION|Exercise All Questions|704 Videos

Similar Questions

Explore conceptually related problems

Insulin (C_(2)H_(10)O_(5))_(n) is dissolved in a suitable solvent and the osmotic pressure pi of the solution of various concentration ( in kg//m^(3)) is measured at 20^(@)C . The slpe of a plot of pi against c is found to be 8.134xx10^(-3) ( SI units ). The molecular weight of the insulin ( in kg//mol) is :

When dimethyl glyoxime solution is added to an aqueous solution of nickel (II) chloride followed by ammonium hydroxide

(a) Sulphur dioxide gas turns a dichromate solution green. Write the reaction. (b) Also write the reaction when nickel salts in basic medium react with dimethyl glyoxime.

A factory makes two types of items A and B, made of plywood. One piece of item A requires 5 minutes for cutting and 10 minutes for assembling. One piece of item B requires 8 minutes for cutting and 8 minutes for assembling. There are 3 hours and 20 minutes available for cutting and 4 hours for assembling. The profit on one piece of item A is Rs 5 and that on item B is Rs 6. How many pieces of each type should the factory make so as to maximise profit? Make it as an L.P.P. and solve it graphically.

Addition of non-volatile solute to solvent lowers its vapoure pressure. Therefore, the vapour pressure of a solution (i.e, V.P. of solvent in a solution) is lower than that of pure solvent in a solution) is lower than that of pure solvent, at the same temperature. A higher temperature is needed to raise the vapour pressure upto one atmosphere pressure, when boiling point is attined. However, increase in b.pt. is small . for example, 0.1 molal aqueous sucrose solution boils at 10.05^(@)C Sea water, an aqueous solution, which is rich in Na^(+) and Cl^(-) ions, freezes about 1^(@)C lower than frozen water . At the freezing point of a pure-solvent, the reates at which two molecule stick together to form the solid and leave it to return to liquid are equal when solute is present. Few solvent molecules are in contact with surface of solid. However, the rate at which the solvent molecules leave, surface of solid remains unchanged. That is why, temperature is lowered to restore the equalibrium. The freezing depression in a dilute solution is proportional to molality of the solute. The freezing point of benzene solution was 5.4^(@)C . The osmotic pressure of same solution at 10^(@)C is (freezing point of benzene = 5.5^(@)C ). Assume solution to be dilute. [ K_(f) for C_(6)H_(6) is 4.9 K "molality"^(-1) ].

Insulin (C_(2)H_(10)O_(5))_(n) is dissolved in a suitable solvent and the osmotic pressure (pi) of solutions of various concentrations (g//cm^(3))C is measured at 20^(@)C . The slope of a plot of pi against C is found to be 4.65 xx 10^(-3) . The molecular weight of insulin is:

GRB PUBLICATION-SALT ANALYSIS-J: IVth Group Cations
  1. A suspension containing insoluble substances ZnS, MnS, HgS, Ag(2)S and...

    Text Solution

    |

  2. Dimethyl glyoxime in a suitable solvent was refluxed for 10 minutes wi...

    Text Solution

    |

  3. Which of the following cation does not give red colour precipitate/sol...

    Text Solution

    |

  4. A metal M and its compound can give the following observable changes i...

    Text Solution

    |

  5. An aqueous solution contains both Al^(3+) & Zn^(2+).To this solution N...

    Text Solution

    |

  6. A solution containing SCN^(-) ions can be used to test one or more out...

    Text Solution

    |

  7. The auxiliary reagent in group-IV reagent is:

    Text Solution

    |

  8. To avoid the precipitation of hydroxides of Ni^(2+),Co^(2+),Mn^(2+) al...

    Text Solution

    |

  9. A blue colouration (in solution or precipitate) is not obtained when:

    Text Solution

    |

  10. In the fourth group, white precipitate of Mn(OH)(2) on heating with Pb...

    Text Solution

    |

  11. A coloured solution of a salt gives following reactions: I. It gives...

    Text Solution

    |

  12. Zn(OH)(2)darr is soluble in:

    Text Solution

    |

  13. Which of the following metal sulphides has maximum solubility in water...

    Text Solution

    |

  14. A reddish pink substance on heating gives off a vapour which condenses...

    Text Solution

    |

  15. Among the following, buff colour metal sulphide is:

    Text Solution

    |

  16. Black colour compound A is insoluble in HCI solution but soluble in aq...

    Text Solution

    |

  17. When H(2)S gas a passed through an ammonical salt solution X, a slight...

    Text Solution

    |

  18. Buff coloured cyanide compound (A) reacts with excess of KCN in presen...

    Text Solution

    |

  19. Among the following, brownish black colour metal sulphide is:

    Text Solution

    |

  20. How many structural isomers can be possible for yellow complex?

    Text Solution

    |