PRACTICAL CHEMISTRY
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NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PRACTICAL CHEMISTRY

37577 On passing a gas, ' \(\mathrm{X}\) ', through Nessler's reagent, a brown precipitate is obtained. The gas ' \(\mathrm{X}\) ' is

1 \(\mathrm{H}_2 \mathrm{~S}\)
2 \(\mathrm{CO}_2\)
3 \(\mathrm{NH}_3\)
4 \(\mathrm{Cl}_2\)
PRACTICAL CHEMISTRY

37578 The oxidation number of iron in the compound formed during brown ring test for \(\mathrm{NO}_3^{-}\)ion is___________

1 \(9\)
2 \(1\)
3 \(5\)
4 \(45\)
PRACTICAL CHEMISTRY

37579 If \(50 \mathrm{~mL}\) of \(0.5 \ \mathrm{M}\) oxalic acid is required to neutralise \(25 \mathrm{~mL}\) of \(\mathrm{NaOH}\) solution, the amount of \(\mathrm{NaOH}\) in \(50 \mathrm{~mL}\) of given \(\mathrm{NaOH}\) solution is__________ \(g.\)

1 \(4\)
2 \(5\)
3 \(7\)
4 \(9\)
PRACTICAL CHEMISTRY

37580 Given below are two statements:Statement-\(I\): The gas liberated on warming a salt with dil \(\mathrm{H}_2 \mathrm{SO}_4\), turns a piece of paper dipped in lead acetate into black, it is a confirmatory test for sulphide ion.Statement-\(II\): In statement-I the colour of paper turns black because of formation of lead sulphite.In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement-\(I\) and Statement-\(II\) are false
2 Statement-\(I\) is false but Statement-\(II\) is true
3 Statement-\(I\) is true but Statement-\(II\) is false
4 Both Statement-\(I\) and Statement-\(II\) are true.
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PRACTICAL CHEMISTRY

37577 On passing a gas, ' \(\mathrm{X}\) ', through Nessler's reagent, a brown precipitate is obtained. The gas ' \(\mathrm{X}\) ' is

1 \(\mathrm{H}_2 \mathrm{~S}\)
2 \(\mathrm{CO}_2\)
3 \(\mathrm{NH}_3\)
4 \(\mathrm{Cl}_2\)
PRACTICAL CHEMISTRY

37578 The oxidation number of iron in the compound formed during brown ring test for \(\mathrm{NO}_3^{-}\)ion is___________

1 \(9\)
2 \(1\)
3 \(5\)
4 \(45\)
PRACTICAL CHEMISTRY

37579 If \(50 \mathrm{~mL}\) of \(0.5 \ \mathrm{M}\) oxalic acid is required to neutralise \(25 \mathrm{~mL}\) of \(\mathrm{NaOH}\) solution, the amount of \(\mathrm{NaOH}\) in \(50 \mathrm{~mL}\) of given \(\mathrm{NaOH}\) solution is__________ \(g.\)

1 \(4\)
2 \(5\)
3 \(7\)
4 \(9\)
PRACTICAL CHEMISTRY

37580 Given below are two statements:Statement-\(I\): The gas liberated on warming a salt with dil \(\mathrm{H}_2 \mathrm{SO}_4\), turns a piece of paper dipped in lead acetate into black, it is a confirmatory test for sulphide ion.Statement-\(II\): In statement-I the colour of paper turns black because of formation of lead sulphite.In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement-\(I\) and Statement-\(II\) are false
2 Statement-\(I\) is false but Statement-\(II\) is true
3 Statement-\(I\) is true but Statement-\(II\) is false
4 Both Statement-\(I\) and Statement-\(II\) are true.
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PRACTICAL CHEMISTRY

37577 On passing a gas, ' \(\mathrm{X}\) ', through Nessler's reagent, a brown precipitate is obtained. The gas ' \(\mathrm{X}\) ' is

1 \(\mathrm{H}_2 \mathrm{~S}\)
2 \(\mathrm{CO}_2\)
3 \(\mathrm{NH}_3\)
4 \(\mathrm{Cl}_2\)
PRACTICAL CHEMISTRY

37578 The oxidation number of iron in the compound formed during brown ring test for \(\mathrm{NO}_3^{-}\)ion is___________

1 \(9\)
2 \(1\)
3 \(5\)
4 \(45\)
PRACTICAL CHEMISTRY

37579 If \(50 \mathrm{~mL}\) of \(0.5 \ \mathrm{M}\) oxalic acid is required to neutralise \(25 \mathrm{~mL}\) of \(\mathrm{NaOH}\) solution, the amount of \(\mathrm{NaOH}\) in \(50 \mathrm{~mL}\) of given \(\mathrm{NaOH}\) solution is__________ \(g.\)

1 \(4\)
2 \(5\)
3 \(7\)
4 \(9\)
PRACTICAL CHEMISTRY

37580 Given below are two statements:Statement-\(I\): The gas liberated on warming a salt with dil \(\mathrm{H}_2 \mathrm{SO}_4\), turns a piece of paper dipped in lead acetate into black, it is a confirmatory test for sulphide ion.Statement-\(II\): In statement-I the colour of paper turns black because of formation of lead sulphite.In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement-\(I\) and Statement-\(II\) are false
2 Statement-\(I\) is false but Statement-\(II\) is true
3 Statement-\(I\) is true but Statement-\(II\) is false
4 Both Statement-\(I\) and Statement-\(II\) are true.
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PRACTICAL CHEMISTRY

37577 On passing a gas, ' \(\mathrm{X}\) ', through Nessler's reagent, a brown precipitate is obtained. The gas ' \(\mathrm{X}\) ' is

1 \(\mathrm{H}_2 \mathrm{~S}\)
2 \(\mathrm{CO}_2\)
3 \(\mathrm{NH}_3\)
4 \(\mathrm{Cl}_2\)
PRACTICAL CHEMISTRY

37578 The oxidation number of iron in the compound formed during brown ring test for \(\mathrm{NO}_3^{-}\)ion is___________

1 \(9\)
2 \(1\)
3 \(5\)
4 \(45\)
PRACTICAL CHEMISTRY

37579 If \(50 \mathrm{~mL}\) of \(0.5 \ \mathrm{M}\) oxalic acid is required to neutralise \(25 \mathrm{~mL}\) of \(\mathrm{NaOH}\) solution, the amount of \(\mathrm{NaOH}\) in \(50 \mathrm{~mL}\) of given \(\mathrm{NaOH}\) solution is__________ \(g.\)

1 \(4\)
2 \(5\)
3 \(7\)
4 \(9\)
PRACTICAL CHEMISTRY

37580 Given below are two statements:Statement-\(I\): The gas liberated on warming a salt with dil \(\mathrm{H}_2 \mathrm{SO}_4\), turns a piece of paper dipped in lead acetate into black, it is a confirmatory test for sulphide ion.Statement-\(II\): In statement-I the colour of paper turns black because of formation of lead sulphite.In the light of the above statements, choose the most appropriate answer from the options given below:

1 Both Statement-\(I\) and Statement-\(II\) are false
2 Statement-\(I\) is false but Statement-\(II\) is true
3 Statement-\(I\) is true but Statement-\(II\) is false
4 Both Statement-\(I\) and Statement-\(II\) are true.