Skip to content 1 State whether the following statements are True or False.
SA (Short)
2 Which of the following mixtures are correctly classified as homogeneous (Hm) and heterogeneous (Ht)?
MCQ (Multiple Choice)
3 Is sublimation different from evaporation?
SA (Short)
4 Why do immiscible liquids form two separate layers in a separating funnel?
SA (Short)
5 Clouds are made up of tiny water droplets or ice crystals floating in the air.
SA (Short)
6 Why do cities with a lot of smoke and dust in the air often look hazy?
SA (Short)
7 Choose the correct options, and explain the reason for the correct and incorrect options.
MCQ (Multiple Choice)
8 A mixture can be categorised as a solution, a suspension, or a colloid, each possessing distinct properties.
SA (Short)
9 Solve the following problems:
SA (Short)
10 The label on a cooking oil pack says one litre (910 g).
LA (Long)
11 Assertion (A): Solutions do not exhibit the Tyndall effect.
AR (Assertion & Reason)
12 Two miscible liquids, A and B, are present in a mixture.
SA (Short)
13 Compare evaporation, crystallisation and distillation.
LA (Long)
14 Blood is an example of a colloidal mixture.
SA (Short)
15 You are given a mixture of sand, common salt and naphthalene as shown in fig.
LA (Long)
16 How would you separate the mixtures provided in the given table?
SA (Short)
17 Answer the following questions with the help of the data given in the table: Table: Solubility of various salts (in g per 100 g of water) at different temperatures…
LA (Long)
18 Three students, A, B and C, are preparing sugar solutions for an experiment: • Student A dissolves 20 g of sugar in 80 g of water.
SA (Short)
19 Examine the fig.
LA (Long)
20 Why is distillation an effective method for separating a mixture of water and acetone?
SA (Short)
21 Why do suspended particles settle in muddy water over time but not in milk?
SA (Short)
22 How is evaporation different from boiling?
SA (Short)
23 If a hot, saturated solution of copper sulfate is cooled rapidly in ice-cold water, smaller and less well-formed crystals will form than if it is cooled slowly at room temperature.
LA (Long)
24 The spinning game is a folk dance called phugadi in Marathi and kikli in Punjabi.
VS (Very Small)
25 What if two immiscible liquids of the same density are mixed in a separating funnel, how will the layers form?
SA (Short)
26 Why do you see bright rays of sunlight when it passes through small gaps between the leaves of a dense tree?
SA (Short)
27 A common talcum powder contains 4% m/m zinc oxide, which acts as an antiseptic.
SA (Short)
28 Vinegar, used as a food preservative and additive, contains 5% v/v acetic acid.
SA (Short)
29 Will there be any change in the size of common salt crystals if the rate of evaporation is increased or decreased?
SA (Short)
30 Refer to the solubility curves given in the graph provided below.
SA (Short)