German silver used for making utensils is an alloy of
1). copper silver nickel
2). copper zinc nickel
3). copper zinc aluminium
4). copper nickel aluminium
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1. Which gas is used as fire extinguisher?
3. The chemical formula of the laughing gas is
4. Which of the following gases is known as "Laughing Gas"?
5. The gas used in the manufacture of vanaspati from vegetable oil is
6. Which of the following alkali metals has highest specific heat?
7. Which one of the following organic compounds has fruity smell?