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Test: Basic Science- 1 - Class 8 MCQ


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10 Questions MCQ Test GK Olympiad for Class 8 - Test: Basic Science- 1

Test: Basic Science- 1 for Class 8 2024 is part of GK Olympiad for Class 8 preparation. The Test: Basic Science- 1 questions and answers have been prepared according to the Class 8 exam syllabus.The Test: Basic Science- 1 MCQs are made for Class 8 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Basic Science- 1 below.
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Test: Basic Science- 1 - Question 1

The seeds of the given plant are light and spongy. Which of the following help in the dispersal of seeds of the given plant?

Detailed Solution for Test: Basic Science- 1 - Question 1

The seeds of plants growing near water or in water are dispersed by water. The seeds of these plants are light in weight. The lotus has spongy fruits that are dispersed through water.

Test: Basic Science- 1 - Question 2

This part of the plant is called its food factory because it produces food for the plant using sunlight, water and carbon dioxide. Which part of the plant is this?

Detailed Solution for Test: Basic Science- 1 - Question 2

The leaf is the part of the plant that produces food for the plant by the process of photosynthesis. The leaf has chlorophyll which gives the green color to the leaf. Chlorophyll makes food for the plant using carbon dioxide, water, nutrients, and sunlight.

Test: Basic Science- 1 - Question 3

Photosynthesis is the process by which a plant makes food. What does this process produce?

Detailed Solution for Test: Basic Science- 1 - Question 3

Plants are known as autotrophs because they can use energy from the sunlight to make their own food. When a plant uses sunlight, water, and carbon dioxide to make glucose which is a form of sugar that plants require in order to sustain. They also release oxygen during the process of photosynthesis.

Test: Basic Science- 1 - Question 4

Which of the following statements is incorrect?

Detailed Solution for Test: Basic Science- 1 - Question 4

Begonia like any other flower reproduces asexually. They produce fruits which contain seeds. They are capable of propagating from a portion of the leaf.

Test: Basic Science- 1 - Question 5

Read the given paragraph.
As there is more and more ____(i)______, we are constructing taller buildings,factories and roads. The continuous process of building results in ____(ii)_____ of large quantities of waste formed by it in the landfill areas.

Select the option which correctly fills up the blanks.

Detailed Solution for Test: Basic Science- 1 - Question 5

As there is more and more industrialisation, we are constructing taller buildings, factories and roads. The continuous process of building results in disposition of large quantities of waste formed by it in the landfill areas. To construct a structure requires land and to fulfill the land requirement the landfilled areas where the garbage is dumped are used in order to construct new industries and building.

Test: Basic Science- 1 - Question 6

To check the level of harmful gases emitted by the vehicles, all vehicles in India which are in use need to obtain emission check certificate. What is this certificate known as?

Detailed Solution for Test: Basic Science- 1 - Question 6

Pollution Under Control certificate under Central Motor Vehicles Rule, 1989. The test assesses the emission of a vehicle and check it meets the standards set for pollution control.

Test: Basic Science- 1 - Question 7

The given symbol is commonly seen on consumer products such as microwaves, refrigerators and lighting devices. What does this symbol indicates about the product?

Detailed Solution for Test: Basic Science- 1 - Question 7

Energy star is an initiative by the governments that help the consumers to identify the energy-efficient products and help them save money and reduce greenhouse gas emissions. Energy star is a program run by the U.S. Environmental Protection Agency and U.S. Department of Energy.

Test: Basic Science- 1 - Question 8

Raj is travelling with his father in a car. He asks his father to turn off the engine at red lights in order to conserve a natural resource. Which of the following is being conserved by this activity?

Detailed Solution for Test: Basic Science- 1 - Question 8

Motor Vehicles required fuels to run. The fuels used are petrol and diesel which are non- renewable resources. Thus, conserving these natural resources should be the aim of each and every citizen. Thus, in the current situation asking the father to turn off the engine at red lights in order to conserve fuel is one such method.

Test: Basic Science- 1 - Question 9

Noble gases or inert gases are so named because they are highly unreactive and do not form compounds under normal conditions. Which of these is not an inert gas?

Detailed Solution for Test: Basic Science- 1 - Question 9

An inert gas is a gas that does not usually react chemically with other things. They are the most stable elements as they have maximum number of valence electrons in their outer shell.
Examples of inert gases are Argon, Neon, Xenon and Helium. They are often used in welding and sealing.

Test: Basic Science- 1 - Question 10

The classical Rutherford scattering of alpha particles against the nuclei of this element is an example of 'elastic scattering' because the energy and velocity of the outgoing scattered particle is the same as that with which it began. What element did Rutherford use in his experiment?

Detailed Solution for Test: Basic Science- 1 - Question 10

Ernest Rutherford was a New Zealand-born British scientist, who won the Nobel Prize in Chemistry in 1908, for his work on nuclear physics, and for the theory of the structure of the atom.
In 1911, he performed the Alpha particle scattering experiment or the elastic scattering using a gold foil, which led to the birth of the nuclear model of an atom and was a major step towards how we see the atom today.

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