An oxide of an element was dissolved in water. The final solution turned red litmus blue. Is the element metal, non-metal or a metalloid?
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What is the concentration of sugar (C12H22O11) in mol L–1 if its 20 g are dissolved in enough water to make a final volume up to 2L?
Solution: We know that Molarity of a solution = Number of moles of solute/Volume of solution in Litres molar mass of C12H22O11 = 12*12. + 1*22 + 11*16 = 342 g /...
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1. the number of ways in the squares of 8x8 chess board can be painted red or blue so that each 2x2 square has two red and two blue squares is
Solution: For an m×n chessboard there are 2m+2n−2 ways. Case I. There are two horizontally adjacent squares of the same color: 2m−2 ways. Case II. There are two vertically adjacent squares of the same color: 2n−2 ways. Case III. None of the...
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What change will you observe if you test soap with litmus paper (red and blue)?
Since soap is basic in nature, it will turn red litmus blue. However, the colour of blue litmus will remain blue.
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A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains
(d) starch,is the correct option.
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A solution turns red litmus blue, its pH is likely to be
The solution which turns red litmus blue is basic. Its pH should be greater than 7. Therefore, the correct answer is (d).
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An aqueous solution turns red litmus solution blue.
Hyclrochloric acid because adding excess acid to the base would turn blue litmus solution red.
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What do we observe on pouring acetic acid on red and blue litmus papers?
(A) Red litmus remains red and blue litmus turns red.
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Select the correct observation about dilute solution of acetic acid. (A) It smells like rotten egg and turns blue litmus red.
(D) It smells like vinegar and turns blue litmus red.
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What change will you observe if you test soap with litmus paper (red and blue),
Soap is a salt of a strong base (NaOH or KOH) and a weak acid (carboxylic acid). So, its aqueous solution is basic in nature. Hence, an aqueous solution of...
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Select the correct statement about the properties of acetic acid. (a) It smells like vinegar and turns red litmus to blue.
(d) It smells like vinegar and turns blue litmus to red.
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