Fill in the blanks.
1. Alacaphoxe_______is the gaseous domain that surrounds the Earth.
2. The chains of mountains stretching over long distances are called__________
3. Rift valleys are also known as__________
4. The lower wall of a fault is known as_______ 5. A______ is a crack or line of weakness on the crust of the earth
6. The ______rivers originate from the glaciers found in the mountains.
Answers
Answer:
TOPPER SAMPLE PAPER - I
1. Questions 1 to 5 are one mark questions. They are to be answered in
one word or one sentence.
2. Questions 6 to 14 are two marks questions. They are to be answered in
about 30 words.
3. Questions 15 to 23 are three marks questions. They are to be answered
in about 50 words.
4. Questions 24 to 26 are five marks questions. They are to be answered
in about 70 words.
5. Questions 27 to 41 are multiple choice questions based on practical
skills. Each question is a one mark question. You are to choose one most
appropriate response out of the four options: a, b, c and d provided to
you.
Q 1. What is the function of aerenchyma in aquatic plants?
Q 2. Derive the formula of aluminium oxide.
Q 3. If an atom contains one electron and one proton, will it carry any
charge or not? Give reason.
Q 4. Can we hear the ringing of a mobile phone placed in a vacuum
chamber?
Q 5. What are infrasonic waves?
Q 6. a) Name two ways of improving crop varieties.
b) Why is nitrogen referred to as a macronutrient of plants?
Q 7. Identify the tissue and state its function in each of the following
instances:
i) Tissue composed of sieve tubes, companion cells,
parenchyma and fibres.
ii) Hard tissue with thick lignin deposition in cell walls.
Q 8. Which disease out of the following has the maximum chance to
spread in a fully packed theatre from a sick person? Why?
Pneumonia, cholera, syphilis.