General Awareness Quiz – General Science
General Awareness Quiz Set 7 for SSC CGL, SSC CHSL and Railways exams.
Topic: Science
- Who established the “Law Of Conservation Of Mass” and “Law Of Constant Proportions”?
A) Avogadro
B) Robert Boyle
C) Lavoisier
D) Marie Curie
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Option C
Explanation: Antoine L. Lavoisier laid the foundation of chemical sciences by establishing two important laws of chemical combination
- Who discovered the biological cells?
A) Robert Brown
B) Robert Hooke
C) Schleiden
D) Schwann
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Option B
Explanation: Cells were first discovered by Robert Hooke in 1665. He observed the cells in a cork slice with the help of a primitive microscope. Leeuwenhoek (1674), with the improved microscope, discovered the free living cells in pond water for the first time. It was Robert Brown in 1831 who discovered the nucleus in the cell.
- Which of the following quantity defines the the change in velocity of the object during any time interval?
A) speed
B) displacement
C) acceleration
D) time period
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Option C
Explanation: acceleration, which is a measure of the change in the velocity of an object per unit time.
- As per Dalton’s atomic theory element had a characteristic ________.
A) atomic mass
B) building blocks
C) quantity
D) name
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Option A
Explanation: The most remarkable concept that Dalton’s atomic theory proposed was that of the atomic mass. According to him, each element had a characteristic atomic mass. The theory could explain the law of constant proportions so well that scientists were prompted to measure the atomic mass of an atom.
- Chlamydomonas is a type of?
A) unicellular organism
B) multicellular organism
C) homosingular organism
D) multisingular organism
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Option A
Explanation: unicellular organism
- Which of the following is a counting unit used by chemists while carrying out reactions?
A) grams
B) mole
C) freckles
D) valency
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Option B
Explanation: a mole is the chemist’s counting unit.
- If an object is at rest it tends to remain at rest; if it is moving it tends to keep moving. This property of an object is known as?
A) mass
B) momentum
C) inertia
D) napom
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Option C
Explanation: inertia
- Which of the following membrane allows or permits the entry and exit of some materials in and out of the cell?
A) lipid
B) cytoplasm
C) nuclear
D) plasma
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Option D
Explanation: Plasma Membrane is the outermost covering of the cell that separates the contents of the cell from its external environment. The plasma membrane allows or permits the entry and exit of some materials in and out of the cell. It also prevents movement of some other materials. The cell membrane, therefore, is called a selectively permeable membrane.
- What is the SI Unit of force?
A) m/s^2
B) kg m s^2
C) m/s^-2
D) kg m s^–2
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Option D
Explanation: The SI unit of force is kg m s–2. This is also known as newton and represented by the symbol
- The plant cell wall is composed mainly of which substance?
A) starch
B) cellulose
C) glycogen
D) None of these
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Option B
Explanation: Plant cells, in addition to the plasma membrane, have another rigid outer covering called the cell wall. The cell wall lies outside the plasma membrane. The plant cell wall is mainly composed of cellulose. Cellulose is a complex substance and provides structural strength to plants.
