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Q. Sun accounts for approximately what fraction of total mass of Solar System ?

Q. Which among the following is the main constituent of malleable metal alloy Pewter ?

Q. When we buy a Jewellery of 22 carat Gold , this means that we are getting a purity of gold with ______?

Q. First Indian Satellite Aryabhatta was launched in which year ?

Q. If a person wants to increase the level of good Cholesterol in his / her body, which among the following you would advise? 1. Increase the use of trans fatty acids in diet 2. Stop smoking 3. Consumption of omega-3 fatty acids Choose the correct option:

Q. Which of the following is / are correct statements with respect to Copper (Cu), Silver (Ag) and Gold (Au)? 1. All of them are can be found naturally in their elemental state 2. All of them belong to same group in the periodic table Select the correct option from the codes given below:

Q. An Jewellery was left exposed to the atmosphere for some time and it becomes coated with green carbonate. The Jewellery is made up of which of the following?

Q. Pest-resistant cotton commonly known as ‗Bt-Cotton‘ is genetically engineered by inserting a gene from a:

Q. Froth & Foams are examples of which of the following ?

Q. To keep the hot glass item‘s finishing and transparency , they go through a process called annealing. This process involves _______?