JMI 6th Previous Year Question Paper 2019 with answer key and explanation
Science & Environmental Science
1. A flat surface with one end higher than the other is
(A) Flag pole
(B) Inclined plane
(C) Long rod
(D) Wheel
Answer:
(B) Inclined plane
Explanation:
An inclined plane is a simple machine defined as a flat supporting surface tilted at an angle, with one end higher than the other.
2. Work = ______ X Distance
(A) Force
(B) Time
(C) Weight
(D) Mass
Answer:
(A) Force
Explanation:
The formula for work in physics is Work = Force × Distance.
3. The smallest microorganisms is
(A) Bacteria
(B) Virus
(C) Fungi
(D) Protozoa
Answer:
(B) Virus
Explanation:
Viruses are the smallest type of microorganism.
4. While orbiting the earth in spaceships, weightlessness is experienced due to
(A) Inertia
(B) Acceleration
(C) Centre of gravity
(D) Gravitational force being zero
Answer:
(D) Gravitational force being zero
Explanation:
In orbit, the constant freefall of the spaceship creates the sensation of weightlessness. Among the given choices, the concept of the gravitational force being zero is the intended answer to describe this phenomenon.
5. Which of these micro organisms does not harm plants?
(A) Protozoa
(B) Fungi
(C) Bacteria
(D) Virus
Answer:
(A) Protozoa
Explanation:
Fungi, bacteria, and viruses are common causes of plant diseases. While some protozoa can be pathogens, many are a harmless part of the soil ecosystem.
