Acids, Bases An...

In the table given below, match the bases in the first column with their applications mentioned in the second column.

The solution of a strong acid is mixed with an equal amount of a solution of a strong base. The resultant mixture is then tested with a neutral litmus paper. What will be the colour change observed in the litmus paper?

If pH of a solution is 1.5, then what is the nature of the solution?

In which of the following solutions will a strip of cloth, soaked in onion juice, lose its odour when added to it?

Although salts are formed as a product of neutralisation reactions between an acid and a base, yet every salt solution is not neutral. In light of the given information, predict the correct option regarding the colour change shown by an aqueous solution of Fe₂(SO₄)₃ with different indicators.

Which of the following oxides, when dissolved in water, gives a solution which turns blue litmus red?

Which of the following statements are correct about an aqueous solution of an acid or a base having equal concentrations?

(i) Higher the pH, stronger the acid. (For pH < 7)
(ii) Higher the pH, weaker the acid. (For pH < 7)
(iii) Lower the pH, stronger the base. (For pH > 7)
(iv) Lower the pH, weaker the base. (For pH > 7)

The correctly matched pairs are:

I. Caustic soda - Sodium thiosulphate
II. Lime - Sodium hydroxide
III. Washing soda - Sodium carbonate
IV. Baking soda - Sodium bicarbonate

Directions: Read the following passage and select the option that correctly fills the blanks in the given statements.

Milk is slightly acidic because it contains __(i)__, which is a __(ii)__ ion donor. When milk turns sour, __(iii)__ is converted to __(i)__. During summer, the milkman adds __(iv)__ to the milk, which makes it slightly __(v)__ and delays the process of souring of the milk.

Analyse the given statements:

A. All acids are sour to taste.
B. All bases are bitter to taste.
C. Acids are electrolytes.
D. All acids are highly corrosive.

Which of the following options is the correct analysis of the statements?

Analyse the two statements given below and select the correct option.

Statement I: Acids are sour and bases are bitter; hence, they can be tested by tasting.
Statement II: All acids and bases are strong electrolytes.

Which of the following will not conduct electricity when dissolved in water?

When zinc reacts with dilute sulphuric acid, which of the following are the products?

Observe the following flow chart, in context of the reactions of HCl with P, Q and R.

'Z' is a gas that turns lime water milky.
'X' is a gas that burns with a pop sound.
'Y' is an aqueous solution that turns the universal indicator green.



Select the correct option that qualifies as P, Q and R.

Refer to the dichotomous key and select the option that correctly represents A, B, C, D and E.

I. (i) Olfactory indicator Go to II
(ii) Visual indicator Go to III
II. (i) A vegetable used to make curries
(ii) A flavouring agent for ice creams
III. (i) Of natural origin Go to IV
(ii) Turns yellow with bases
IV. (i) Turns green with bases
(ii) Turns blue with bases

A student took four different solutions in four different test tubes, as shown below, and added a few drops of methyl orange indicator to each solution.





Which of the following observations is correct?

Observe the given diagram and select the option which correctly names W, X, Y and Z:

The acidity of soil can be controlled by the addition of

pH = ____ is called pH scale.

If few drops of phenolphthalein indicator are added to washing soda solution, then it will show