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
Which of the following is/are incorrect statement(s) regarding manure?
(i) Manure enhances the water holding capacity of the soil.
(ii) Manure is nutrient specific i.e. supply a particular desired nutrient.
(iii) Manure decreases the number of friendly microbes.
(iv) Manure improves the texture of the soil.
(v) Manure is prepared by the decomposition of dead plant and animal matter.
A (i), (iii) and (v) only
B (v) only
C (ii), (iii), (iv) and (v) only
D (ii) and (iii) only
ANSWER IS D.
To break a glass tile by hands, one needs to use one’s __________ system.
D Both (B) and (C)