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JEE Main Test 1...

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  • Question 1
    4 / -1

    Read the following statements 

    (i) 12300 has only 3 significant digits 
    (ii) 1.2300 × 104 has only 5 significant digits 
    (iii) 0.012300 × 106 has only 3 significant digits 
    (iv) all trailing zeroes are non significant digits 

    Correct statements are

  • Question 2
    4 / -1

    The coagulation of 100 ml of a colloidal sol of gold is completely prevented by addition of 0.25 g of a substance ‘X’ to it before adding 10 ml of 1% NaCl solution. The gold number of ‘X’ is

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