Which of the following is not true about Big Bang theory?

(1) A singular huge explosion

(2) Universe expanded and temperature came down

(3) Hydrogen and Helium formed alongwith this expansion

(4) The gases condensed under gravitation and formed the galaxies of the present day universe.

Subtopic:  Cosmic Evolution |
 65%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Which of the following is true regarding early earth?

1. Earth was supposed to have been formed about 4.5 billion years back.

2. The atmosphere of early earth was full of water vapour.

3. The surface of earth was covered by water vapour, methane and carbondioxide, the three compounds, formed from molten mass.

4. The UV rays from the sun broke up water into hydrogen and oxygen and lighter oxygen escaped.

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
 71%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

…….combined with ….. and….. to form water, CO2 and others.

(1) Oxygen, ammonia and Methane

(2) Hydrogen, ammonia and Methane

(3) Hydrogen, Methane and ammonia

(4) Oxygen, Methane and hydrogen

Subtopic:  Urey & Miller Experiment |
 59%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Which of the following theory is dismissed by Louis Pasteur's Experiment?

(1) Theory of panspermia

(2) Theory of spontaneous generation

(3) Theory of special creation

(4) Catastrophic theory

Subtopic:  Other Theories of Origin of Life |
 85%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Oparin of…… and Haldane of ….. proposed that the first form of life could have come from pre existing …………

(1) Russia, England, non-living inorganic molecules

(2) England, Russia, living organic matter

(3) Russia, England, non-living organic molecules

(4) England, Russia, life

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
 60%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The formation of diverse organic molecules from inorganic molecules was proposed by

(1) L. Miller

(2) Oparin

(3) Haldane

(4) Both B and C

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

Which of the following conditions was not there in the Earth at  the time of origin of first life form?

(1) High Temperature

(2) Volcanic storms

(3) Reducing atmosphere

(4) Oxygen,Methane and Ammonia in the environment

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
 84%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Which of the following statements is true?

(1) A British scientist created the conditions proposed by Oparin and Haldane in a closed flask with temperature of 800 degree Celsius in electric discharge along with gases methane, hydrogen, ammonia and water vapour and observed formation of amino acid.

(2) Some similar experimental setups were also prepared by other scientists and formation of sugar, nitrogenous bases, Pigments and Fats was recorded.

(3) The processes of chemical evolution were occurring elsewhere in space was concluded by the analysis of content of gaseous cloud.

(4) The first self replicating metabolic capsule of life arose 3 billion years back.

Subtopic:  Urey & Miller Experiment |
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The first non cellular form of life

(1) Could have originated 3 billion years back.

(2) Were small molecules like RNA, proteins and Polysaccharides etc.

(3) Didn't have property to reproduce perhaps

(4) Both B and C

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
 62%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

advertisementadvertisement

The first form of life were not

(1) Single cells

(2) in water environment only

(3) originated till about 2000 million years ago

(4) Both A and B

Subtopic:  Origin of Life: Chemical Evolution: 1 | Origin of Life |
 67%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch