Down’s cell is helpful and used to prepare which of the following?
-
- BaSO4
- Na
- NaOH
- NaHCO3
Submitted by :- Muhammad Nawaz
CHEMISTRY
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Which of the sulfate is helpful and used in diagnosis of stomach ulcer?
-
- SrSO4
- BaSO4
- CaSO4
- BeSO4
Submitted by :- Muhammad Nawaz
Mg is present in
- Ascorbic acid
- Haemoglobin
- Vitamin E
- Chlorophyll
Submitted by :- Muhammad Nawaz
Halite is a chemical name of which of the following?
-
- KCI
- NaCl
- MgCl2
- SrCl2
Submitted by :- Muhammad Nawaz
Calcite is an ore of which of the following?
- Ca
- Mg
- Ba
- K
Submitted by :- Muhammad Nawaz
Magnesite is an ore of _____.
-
- Ca
- Mg
- Ba
- K
Submitted by :- Muhammad Nawaz
Barite is an ore of
-
- Ca
- Mg
- Ba
- K
Submitted by :- Muhammad Nawaz
sylvite is an ore of
-
- Ca
- Mg
- Ba
- K
Submitted by :- Muhammad Nawaz
Lime water is an aqueous solution of ______ .
- MgSO3
- Ca(OH)2
- CaCO3
- CaSO4
Submitted by :- Muhammad Nawaz
Ketones are comparatively less reactive than aldehdye. It is due to_______________?
A alkyl groups are electron donating
B. steric hindrance
C. Both A and B
D. none
Submitted by :- Jamil Ahmed