Advertisements
Advertisements
Write the balanced equation for the preparation of the following compound (as major product) starting from iron and using only one other substance:
Iron (II) sulphide
Concept: undefined >> undefined
The following table is related to an industrial process of an acid.
| Name of the process | Reactant | Catalyst | Final product |
| (a) | SO2 + O2 | (b) | (c) |
Identify (a), (b) and (c).
Concept: undefined >> undefined
Advertisements
The electron affinity of an element X is greater than that of element Y.
How is the oxidising power of X likely to compare with that of Y?
Concept: undefined >> undefined
The electron affinity of an element X is greater than that of element Y.
How is the electronegativity of X likely to compare with that of Y?
Concept: undefined >> undefined
The electron affinity of an element X is greater than that of element Y.
State whether X is likely to be placed to the left or to the right of Y in the periodic table.
Concept: undefined >> undefined
Arrange the following as per instruction given in the bracket.
Cl, F, Br, I (increasing electron affinity)
Concept: undefined >> undefined
Among period 2 elements A, B, C and D, the one which has highest electron affinity is ______.
Concept: undefined >> undefined
In Period 3 of the Periodic Table, element B is placed to the left of element A. On the basis of this information, choose the correct word from the option to complete the following statement:
The element A would probably have ______ electron affinity than B.
Concept: undefined >> undefined
State electron affinity unit.
Concept: undefined >> undefined
Identify the term/substance in the following:
The electrons present in the outermost shell of an atom.
Concept: undefined >> undefined
By drawing an electron dot diagram show the formation of Ammonium ion [Atomic No.: N = 7 and H = 1]
Concept: undefined >> undefined
Choose the most appropriate answer of the following:
Bonding in this molecule can be understood to involve coordinate bonding
(A) Carbon tetrachloride
(B) Hydrogen
(C) Hydrogen chloride
(D) Ammonium chloride
Concept: undefined >> undefined
Identify the anion present in the following compounds:
A salt M on treatment with concentrated sulphuric acid produces a gas which fumes in moist air and gives dense fumes with ammonia
Concept: undefined >> undefined
The following table shows the test a student performed on four different aqueous solutions which are X, Y, Z and W. Based on the observations provided, identify the cation present:
| Chemical test | Observation | Conclusion |
| To solution X, ammonium hydroxide is added in minimum quantity first and then in excess |
A dirty white precipitate is formed which dissolves in excess to form a clear solution |
(1) |
| To solution Y ammonium hydroxide is added in the minimum quantity first and then in excess |
A pale blue precipitate is formed which dissolves in excess to form a clear inky blue solution. |
(2) |
| To solution W a small quantity of sodium hydroxide solution is added and then in excess. |
A white precipitate is formed which remains insoluble. |
(3) |
| To a salt Z calcium hydroxide the solution is added and then heated. |
A pungent smelling gas turning moist red litmus paper blue is obtained. |
(4) |
Concept: undefined >> undefined
Choose the correct answer from the options given below:
A compound X consists of only molecules. Hence, X will have
A. A crystalline hard structure
B. A low melting point and low boiling point
C. An ionic bond
D. A strong force of attraction between its molecules
Concept: undefined >> undefined
Give the structural formula for 1, 2-dichloroethane
Concept: undefined >> undefined
Give a reason for Inert gases do not form ions.
Concept: undefined >> undefined
Complete the following table which relates to the homologous series of hydrocarbons.
|
General Formula |
IUPAC name of the homologous series | Characteristic bond type | IUPAC name of the first member of the series |
| `C_nH_(2n-2)` | (A)________ | (B)______ | (C)______ |
| C_nH_(2n+1) | (B)________ | (E)______ | (F)______ |
Concept: undefined >> undefined
Give two example in the following case:
Co-ordinate bond compounds
Concept: undefined >> undefined
Propane and ethane are ______.
Concept: undefined >> undefined
