CBSE Class 4 EVS How Things are Made MCQs Set 01

Answer: (A) To help visually impaired people read and write

Explanation:
1. Braille is a special system of raised dots on paper.
2. Visually impaired people are those who cannot see.
3. They feel these dots with their fingers to read and write easily.

Answer: (B) Remove

Explanation:
1. The 5Rs help us save our Earth and reduce waste.
2. They are Refuse, Reduce, Reuse, Repurpose, and Recycle.
3. Remove is not part of these five special words.

Answer: (C) Reuse paper or write on both sides

Explanation:
1. We should use paper very carefully to not waste it.
2. Writing on both sides of a page uses less paper.
3. Using old paper again also helps save trees.

Answer: (B) Fenugreek seeds

Explanation:
1. Fenugreek seeds are also known as methi seeds.
2. When soaked, they become very sticky.
3. This sticky liquid helps hold the paper pulp together like glue.

Answer: (C) Use both sides of the paper

Explanation:
1. If we write on both sides of a paper, we need fewer sheets.
2. This helps us save trees and reduces waste.
3. Burning paper or throwing it away creates more pollution.

Answer: (B) Paper bowls

Explanation:
1. Paper pulp is a soft, wet mixture made from mashed paper.
2. We can shape this soft mixture into different things.
3. Paper bowls are made by drying this pulp in a mold.

Answer: (C) Cardboard

Explanation:
1. Cardboard is a very thick and strong type of paper.
2. It does not tear easily like normal paper.
3. This makes it perfect for making boxes to pack things safely.

Answer: (B) Henna

Explanation:
1. Henna is a plant that gives a beautiful orange or brown color.
2. A natural dye comes from plants and is safe for the environment.
3. We can use henna to color our recycled paper naturally.

Answer: (A) Repair

Explanation:
1. The 5Rs are Refuse, Reduce, Reuse, Repurpose, and Recycle.
2. Repair is sometimes used in other lists, but it is not one of these standard 5Rs.
3. The other options like Reduce, Refuse, and Recycle are all part of the 5Rs.

Answer: (C) Braille paper

Explanation:
1. Braille paper is thick so that raised dots can be made on it.
2. Blind people cannot see, so they use their fingers to feel these dots.
3. This helps them read and write without seeing.

Answer: (C) Cardboard

Explanation:
1. Cardboard is much thicker and heavier than normal paper.
2. Because it is strong, it can hold heavy things inside.
3. That is why it is used to make packing boxes.

Answer: (C) Reuse

Explanation:
1. The word "Reuse" simply means using things again instead of throwing them away.
2. For example, writing on the back of an old paper is reusing it.
3. This helps us create less waste.

Answer: (B) Fenugreek seeds

Explanation:
1. Fenugreek seeds make a sticky paste when we soak them in water.
2. This sticky paste acts like natural glue or a binder.
3. It helps the loose paper pieces stick together to form a new sheet.

Answer: (B) Greeting card

Explanation:
1. Riya used her recycled paper to make something beautiful.
2. She made a lovely greeting card.
3. This shows we can make useful and pretty things from waste paper.

Answer: (D) Synthetic ink

Explanation:
1. Beetroot, henna, and turmeric are all natural things that come from plants.
2. Synthetic ink is made in factories using chemicals.
3. Therefore, synthetic ink is the different one because it is not natural.

Answer: (C) Making a vase from a plastic bottle

Explanation:
1. Repurpose means using an old item for a completely new job.
2. A plastic bottle is made for holding water or juice.
3. Using it to hold flowers as a vase gives it a brand new purpose.

Answer: (C) Tissue paper

Explanation:
1. Tissue paper is very thin and has small, loose fibers.
2. This allows water to enter and fill the paper very fast.
3. Materials like plastic or glossy paper block water instead of soaking it.

Answer: (B) Tear - Soak - Mash - Roll - Dry

Explanation:
1. First, we tear the old paper into small bits.
2. Next, we soak it in water and mash it to make a soft pulp.
3. Finally, we roll the pulp flat and let it dry to make new paper.

Answer: (C) To save trees and natural resources

Explanation:
1. Paper is made from trees, which are very important for our Earth.
2. Making paper also uses a lot of water and energy.
3. Using paper carefully helps protect our forests and save water.

Answer: (B) Old newspapers

Explanation:
1. Recycled paper is made by using paper that has already been used.
2. Old newspapers are great because we can easily tear and mash them.
3. Wood pulp is used to make fresh new paper, not recycled paper.

Answer: (A) Turmeric

Explanation:
1. Turmeric is a bright yellow spice we use in cooking.
2. Since it comes from a plant root, it is completely natural.
3. Adding turmeric to paper pulp gives the recycled paper a yellow color safely.

Answer: (A) Banana fiber

Explanation:
1. Eco-friendly means something that does not harm nature.
2. Banana fiber comes from the stems of banana plants after harvesting.
3. It is natural, breaks down easily, and does not require cutting down forests.

Answer: (B) To bind the paper

Explanation:
1. To bind means to stick things together so they do not fall apart.
2. Fenugreek seeds form a thick, sticky liquid when soaked in water.
3. This sticky liquid acts like glue to keep the paper pulp joined together.