SSLC (English Medium) Class 7 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Polymers are very long chains made of repeating smaller molecules called ______.

All the ______ present in your body are polymers.

______ is made of sugar molecules and is the main component of cotton used in clothing.

______ and ______ are the building block monomers that make up many different types of plastics.

______ are long strands of polymers interwoven to form linear, string-like structures.

Polyamides are made with monomers.

Match the following:

What is the full form of PVC?

Name the unit used in the formation of a polymer.

Name a natural polymer occurring in plants.

What is polymerization?

What is fever?

Mention the ways to intake the medicine.

______ is a powerful and free office suite, used by millions of people.

Questions based on Higher Order Thinking Skills:

There are three spheres A, B, and C as shown below.

Sphere A and B are made of same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. The density of A is double that of C.

Now answer the following questions.

1. Find the ratio of masses of spheres A and B.
2. Find the ratio of volumes of spheres A and B.
3. Find the ratio of masses of spheres A and C.

Questions based on Higher Order Thinking Skills:

There are three spheres A, B, C as shown below. Sphere A and B are made of same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. Density of A is double that of C.

Now answer the following questions.

1. Find the ratio of masses of spheres A and B.
2. Find the ratio of volumes of spheres A and B.
3. Find the ratio of masses of spheres A and C.

Questions based on Higher Order Thinking Skills:

There are three spheres A, B, C as shown below. Sphere A and B are made of same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. Density of A is double that of C.

Now answer the following question.

1. Find the ratio of masses of spheres A and B.
2. Find the ratio of volumes of spheres A and B.
3. Find the ratio of masses of spheres A and C.

Questions based on Higher Order Thinking Skills:

There are three spheres A, B, C as shown below. Sphere A and B are made of same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. The density of A is double that of C.

Now answer the following questions.

1. Find the ratio of masses of spheres A and B.
2. Find the ratio of volumes of spheres A and B.
3. Find the ratio of masses of spheres A and C.

Questions based on higher-order thinking skills:

There are three spheres A, B, and C as shown below. Spheres A and B are made of the same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of sphere A. The density of A is double that of C.

Now answer the following questions:

1. Find the ratio of masses of spheres A and B.
2. Find the ratio of the volumes of spheres A and B.
3. Find the ratio of masses of spheres A and C.

Questions based on Higher Order Thinking Skills:

Now answer the following questions.

1. Find the ratio of masses of spheres A and B.
2. Find the ratio of volumes of spheres A and B.
3. Find the ratio of masses of spheres A and C.