Three solutions of different substances P, Q and R gave the following results with different indicators.
Solution P : Turns methyl orange to red.
Solution Q : Turns turmeric solution red.
Solution R : Turns phenolphthalein solution pink.
Identify the solutions P, Q and R respectively.
AAntacid, soap solution, lemon juice
BBaking soda, shampoo, antacid
CLemon juice, sodium hydroxide, baking soda
DVinegar solution, antacid, lemon juice
Read the following statements carefully.
X : It is a fossil fuel used in thermal power plants to produce electricity.
Y : It is a porous, black and almost pure form of carbon.
Z : It is a mixture of about 200 substances.
X, Y and Z are respectively
A Petroleum, coal gas, coke
B Coal, coke, coal tar
C CNG, bitumen, diesel
D Coal gas, petrol, paraffin wax.
Observe the given flow chart and answer the following questions. What are a and b?
A a = multiply by 22.4 L, b = multiply by 22.4 L
B a = multiply by 22.4 L, b = divide by 22.4 L
C a = divide by 22.4 L, b = divide 22.4 L
D a = divide by 22.4 L, b = multiply by 22.4 L