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Consider the following statements
1. Galvanisation is the method of protecting steel and iron fromrusting by coating them with a thin layer of zinc.
2. Pure iron is very soft but if it is mixed with a small amount of carbon, it becomes hard and strong.
3. When iron is mixed with nickel and chromium, we get stainless steel, which is hard and does not rust.
Which of the statements given above are correct?
Utkarsh deposited a certain sum of money in SBI Bank at simple interest at a certain rate for 3 years. Had it been deposited 4% higher rate, it would have fetched Rs. 600 more, then find what amount deposited by Utkarsh in SBI Bank.  
Rs 2400000 is divided between A and B in such a way that A gets twice as much amount as B. B deposited his share at 7% S.I for 7 years and then he deposited the accumulated amount at 19% C.I for 2 years. A deposited his share at 8% C.I for 2 years. They invested their respective accumulated amount in a business which earned a profit of Rs 165428 after one year. What is the difference between their profit shares? 
Raji deposited Rs.80000 in a bank at 10% per annum, compounded annually for two years. She wants to keep the amount deposited at the end of the two years,  Also, the rate of interest was reduced to 6% per annum. What amount should she remove from her account to ensure that she just avoids paying the tax? Assume that her account had zero balance before she deposited Rs. 80,000. Note:To just avoid paying tax, the interest for the third year should be exactly Rs. 3000.
Ram deposited a certain sum of money in a company at 12% per annum simple interest for 4 years and deposited equal amounts in fixed deposit in a bank for 5 years at 15% per annum simple interest. If the difference in the interest from two sources is Rs. 1350 then the sum deposited in each case is = ?
Which of the following are not chemical changes? 1. Tempering of iron 2. Conversion of the iron piece into an electro-magnet by passing the current around the iron 3. Melting of iron 4. Rusting of iron Select the correct answer using the code given below:
Out of the total production of iron from hematite, an ore of Iron, 20% of the ore gets wasted, and out of the remaining iron, only 25% is pure iron. If the pure iron obtained in a year from a mine of hematite was 80,000 kg, then the quantity of hematite mined from that mine in the year is
Which of the following statements are true with respect to iron ore?
I. Limestone and coal are important for smelting iron ore
II. More than 20% of the world iron ore deposits are in India
III. Odisha and Jharkhand top in the production of iron ore
IV. Iran is the largest buyer of Indian iron ore
Which of the following methods can be used to prevent corrosion of iron?  (i) Anodising (ii) Soldering (iii) Carbonisation (iv) Galvanisation (v) Thermit process
In the process of Galvanisation, which metal is coated over iron?