The metal that is present in Photo Films is

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11. Nitrification means
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16. The metallic constituents of hard water are
17. The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
18. Water has maximum density at
19. The formula of Plaster of Paris is
20. Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?
21. In an atomic nucleus, neutrons and protons are held together by
22. Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere…
23. The element present in the largest amount in rocks and minerals is
24. What is the unit for measuring the pitch or frequency of sound ?
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26. Bromine is
27. In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If…
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