Solved Chemistry MCQS
Given below are some statements concerning formic acid, which of them is true?
It is a weaker acid than acetic
When its calcium salt is heated, it forms a ketone
It is an oxidizing agent
it is a reducing agent
Addition of iron fillings to CuSO4solution caused precipitation of Cu owing to the
Reduction of Fe3+
Oxidation of Cu2+
Reduction of Cu2+
Reduction of Fe
Each of following is true of white and red phosphours except that they
Can be oxidized by heating in air
Consist of the same kind of atoms
Are both soluble in CS2
Can be converted into one another
Leblanc process is employed in the manufacture of
Baking soda
Potash
Washing soda
Plaster of paris
Which of the following statements is correct with respect to the property of elements with increase in atomic number in the carbon family (group 14)?
The stability of +2 oxidation state increases
Their metallic character decreases
Their atomic size decreases
Their ionization energy increases
Which of the following halogens does not form its oxyacids?
I
Br
Cl
F
Acetylene gives
White ppt. with ammonical AgNO3and red ppt. with ammonical Cu(NO3)2
White ppt. with both
White ppt. with ammonical AgNo3 and red ppt. with ammonicalCu2Cl2
Red ppt. with both
Calcium acetate when dry distilled gives
Acetone
Acetic anhydride
Formaldehyde
Acetaldehyde
Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBh4or LiAH4?
1-Propanol
Ethanol.
2-Propanol
2-Methyl2-Proponal
The spectrum of helium is expected to be similar to that of
Na
Li+
H
He+
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