GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25808
Which of the following is not an ore
1 Bauxite
2 Malachite
3 Zinc blende
4 Pig iron
Explanation:
Pig iron \(\to\) It is the most impure form of iron and contains highest proportion of carbon \((2.5 - 4\% )\) Malachite \(\to Cu{(OH)_2}.CuC{O_3}\) Zinc blende \(\to ZnS\) Bauxite \(\to A{l_2}{O_3}.2{H_2}O\)
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25809
“Chile saltpetre” is an ore of
1 Iodine
2 Sodium
3 Bromine
4 Magnesium
Explanation:
(b)Chile salt petre \(\to\) \(NaN{O_3}\)
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25810
Which of the following metal is not found in free state
1 \(Na\)
2 \(Au\)
3 \(Ag\)
4 \(Pb\)
Explanation:
(a) \(Na \) is alkali metal highly reactive. Hence present in combined state.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25808
Which of the following is not an ore
1 Bauxite
2 Malachite
3 Zinc blende
4 Pig iron
Explanation:
Pig iron \(\to\) It is the most impure form of iron and contains highest proportion of carbon \((2.5 - 4\% )\) Malachite \(\to Cu{(OH)_2}.CuC{O_3}\) Zinc blende \(\to ZnS\) Bauxite \(\to A{l_2}{O_3}.2{H_2}O\)
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25809
“Chile saltpetre” is an ore of
1 Iodine
2 Sodium
3 Bromine
4 Magnesium
Explanation:
(b)Chile salt petre \(\to\) \(NaN{O_3}\)
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25810
Which of the following metal is not found in free state
1 \(Na\)
2 \(Au\)
3 \(Ag\)
4 \(Pb\)
Explanation:
(a) \(Na \) is alkali metal highly reactive. Hence present in combined state.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25808
Which of the following is not an ore
1 Bauxite
2 Malachite
3 Zinc blende
4 Pig iron
Explanation:
Pig iron \(\to\) It is the most impure form of iron and contains highest proportion of carbon \((2.5 - 4\% )\) Malachite \(\to Cu{(OH)_2}.CuC{O_3}\) Zinc blende \(\to ZnS\) Bauxite \(\to A{l_2}{O_3}.2{H_2}O\)
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25809
“Chile saltpetre” is an ore of
1 Iodine
2 Sodium
3 Bromine
4 Magnesium
Explanation:
(b)Chile salt petre \(\to\) \(NaN{O_3}\)
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25810
Which of the following metal is not found in free state
1 \(Na\)
2 \(Au\)
3 \(Ag\)
4 \(Pb\)
Explanation:
(a) \(Na \) is alkali metal highly reactive. Hence present in combined state.
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25808
Which of the following is not an ore
1 Bauxite
2 Malachite
3 Zinc blende
4 Pig iron
Explanation:
Pig iron \(\to\) It is the most impure form of iron and contains highest proportion of carbon \((2.5 - 4\% )\) Malachite \(\to Cu{(OH)_2}.CuC{O_3}\) Zinc blende \(\to ZnS\) Bauxite \(\to A{l_2}{O_3}.2{H_2}O\)
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25809
“Chile saltpetre” is an ore of
1 Iodine
2 Sodium
3 Bromine
4 Magnesium
Explanation:
(b)Chile salt petre \(\to\) \(NaN{O_3}\)
GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS
25810
Which of the following metal is not found in free state
1 \(Na\)
2 \(Au\)
3 \(Ag\)
4 \(Pb\)
Explanation:
(a) \(Na \) is alkali metal highly reactive. Hence present in combined state.