Interactive conceptual questions, diagrams, and step-by-step solutions across Science, Mathematics, Environmental Studies, Social Studies, and English.
Marking pattern: +1.00 positive, 0.00 negative marking.
The bar chart below compares the reversibility of two everyday changes (Melting Wax and Burning Paper):
Which statement correctly describes the change shown by melting candle wax?
The doughnut chart below represents the composition of a molecule made up of smaller constituent units:
What are the smaller constituent units that make up a molecule called?
The horizontal bar chart below compares the relative thermal energy levels of different states of matter:
Which state of matter corresponds to State W, a superheated gas where atoms are stripped of their electrons?
A student classified human digestive processes into physical and chemical changes as shown below:
Why is the process of digestion in our bodies classified as a chemical change?
A science teacher presented a comparison of two key physical properties of an object:
What is the scientific term for the space that matter takes up?
The pie chart below depicts the products formed after burning a sheet of paper completely:
Which statement best explains why burning paper is a chemical change?
The bar chart below shows the freedom of movement of particles across three common states of matter:
Which state of matter allows molecules to spread out indefinitely across all available space?
Souring of curd is a:
Molecule is made of small units called:
The matter that takes the shape of a container it is placed in is a:
The matter in which molecules are quite apart and distant is a:
The change which is permanent and irreversible is:
All matter is made up of very tiny particles called molecules. When a molecule is broken down further, what smaller unit is obtained?
Which of the following is an example of a chemical change?
What is the scientific term used to describe the amount of space an object or substance takes up?
Why can gases spread out indefinitely and fill any available space completely?
Which of the following statements correctly differentiates between a Physical Change and a Chemical Change?
Gurpreet plays with his fraction kit to build a whole using different fractional pieces. The chart below shows the number of identical pieces of size 1/5, 1/4, 1/3, and 1/2 required to make 1 whole:
How many 1/5 pieces are needed together to make one whole?
Gurpreet joins one piece of 1/2 and two pieces of 1/4 to make 1 whole. The chart below shows the share of each piece in the whole circle:
What fraction is formed by combining 2 pieces of 1/4?
Sameer shades one vertical column out of three equal columns in a square to show 1/3. He then draws horizontal lines to divide the square into 6, 9, and 12 equal parts. The bar chart shows the number of shaded parts in each figure:
Which fraction is equivalent to 1/3 when the square is divided into 12 equal parts?
Sevi and Shami divided a piece of chikki into 3 equal pieces. Sevi ate 1 piece (1/3) and Shami ate 2 pieces (2/3). The donut chart below shows their portions:
Which comparison statement between their shares is correct?
Sevi ate 4/6 of a paratha while Shami ate 4/5 of an identical paratha. The bar chart compares the size of a single slice (1/6 vs 1/5) in percentage of a whole:
When two fractions have the same numerator (4/6 and 4/5), which relationship is correct?
Dadaji was served parathas cut into quarters (1/4). He ate 9 pieces of 1/4 paratha. The bar chart shows the breakdown of complete wholes and the remainder quarter:
How many parathas did Dadaji eat altogether?
A list of fractions was sorted by whether their value is less than, equal to, or greater than 1 whole, as displayed in the chart:
Which fraction is strictly greater than 1 whole?
When can we strictly say that 1/2 of an object is greater than 1/3 of another object?