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Grade XII Chemistry
Quiz by Nishita Suares
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Among the 15th group elements, as we move from nitrogen to bismuth, the pentavalency becomes less pronounced and trivalency becomes more pronounced due to
Which of the following statements is not correct for nitrogen?
Collectively the elements of group 15 are called –
Ionic radii (in Ã…) of As 3+ , Sb 3+ Â and Bi 3+ Â follow the order
Which one of the following elements is most metallic ?
Which of the following group 15 elements forms metallic bonds in elemental state
The three important oxidation states of phosphorus are
Which of the following statement is incorrect for group 15 elements ?
Nitrogen is relatively inactive element because
Which of the following has the highest pπ – pπ bonding tendency ?
Pick out the wrong statement.
Nitrogen forms N2 , but phosphorus is converted into P 4 Â from P, the reason is
What causes nitrogen to be chemically inert ?
Pentavalence in phosphorus is more stable when compared to that of nitrogen even though they belong to same group. This is due to
Which one has the lowest boiling point ?
Which of the following fluoride is used as rat poison?
Vapour pressure of a pure liquid liquid X is 2 atm at 300 K. It is lowered to 1 atm on dissolving 1 g of Y in 20 g of liquid X. If molar mass of X is 200, what is the molar mass of Y?
Most of the processes in our body occur in
The term homogenous mixtures signifies that
Which of the following units is useful in relating concentration of solution with its vapour pressure?
Which of the following mixture is(are) called solution?
A plant cell shrinks when it is kept in a
The relative lowering in vapour pressure is proportional to the ratio of the number ofÂ
Which of the following is a quantitative description of the solution?
When a solute is present in trace quantities the following expression is used
The law which indicates the relationship between solubility of a gas in liquid and pressure is
Molarity of liquid HCl will be, if density of solution is 1.17 gm/cc
1 M, 2.5 litre NaOH solution is mixed with another 0.5 M, 3 litre NaOH solution. Then find out the molarity of resultant solution
The molarity of the solution containing 7.1 g of Na2SO4 in 100 ml of aqueous solution is
IUPAC name of (CH3)3 CCl
Which of the following is a primary halide?
The compound which contains all the four 1°, 2°, 3° and 4° carbon atoms is
The IUPAC name of CH2 = CH—CH2 Cl is
C – X bond is strongest in
Which of the following is not a characteristic property of solids?
Which of the following is not a crystalline solid?
The fraction of the total volume occupied by the atoms present in a simple cube is
The edge length of fee cell is 508 pm. If radius of cation is 110 pm, the radius of anion is
Fe 3 O 4 Â (magnetite) is an example of
What type of stoichiometric defect is shown by ZnS?