Welcome, Guest
General Science MCQ Practice
Practice General Science questions with instant scoring, correct answer highlighting, detailed solutions and first-click AI explanation caching for missing explanations.
📚 Questions: 553
🧭 Page: 2 / 56
🎯 10 per page
Correct: 0/10
Wrong: 0/10
Correct
Wrong
Accuracy
Q. 4312
👁 0 views
Consider the following statements:
(i) Optical fibre communication is based on the principle of refraction of light.
(ii) Optical fibre communication is based on the principle of total internal reflection of light.
(iii) In optical fibre communication, light is the carrier wave.
(iv) Optical fibre permits communication over short distances only.
Select the correct statement(s) using the codes given below.
(i) Optical fibre communication is based on the principle of refraction of light.
(ii) Optical fibre communication is based on the principle of total internal reflection of light.
(iii) In optical fibre communication, light is the carrier wave.
(iv) Optical fibre permits communication over short distances only.
Select the correct statement(s) using the codes given below.
Preparing explanation...
Q. 4311
👁 0 views
Arrange the following places in ascending order of local acceleration due to gravity:
(i) Polar region of the earth's surface at the sea level
(ii) Surface of the moon
(iii) Centre of the earth
(iv) Equatorial region on the earth's surface at the sea level
Select the correct answer using the codes given below.
(i) Polar region of the earth's surface at the sea level
(ii) Surface of the moon
(iii) Centre of the earth
(iv) Equatorial region on the earth's surface at the sea level
Select the correct answer using the codes given below.
Preparing explanation...
Q. 4310
👁 1 views
With respect to India's nuclear programme, consider the following statements:
(i) ADITYA is the name of India's indigenously developed tokamak.
(ii) ADITYA is a breeder reactor.
(iii) ADITYA is a fusion reactor.
(iv) ADITYA is a fission reactor.
Select the correct statement(s) using the codes given below.
(i) ADITYA is the name of India's indigenously developed tokamak.
(ii) ADITYA is a breeder reactor.
(iii) ADITYA is a fusion reactor.
(iv) ADITYA is a fission reactor.
Select the correct statement(s) using the codes given below.
- Correct statements: (i) and (iii).
- Why: ADITYA is India’s indigenously developed tokamak—a device for achieving controlled nuclear fusion by magnetic confinement of hot plasma. Hence (i) is true and (iii) (fusion reactor) is true.
- Why others are false: (ii) ADITYA is not a breeder reactor; (iv) it is not a fission reactor.
- Key concept: Tokamak uses magnetic fields to confine plasma for fusion, not fission.
- Exam tip: Remember ADITYA as a pioneering fusion device, not a reactor for fission or breeding.
Q. 4309
👁 1 views
The international convention on the control of transboundary movement of hazardous waste and their
disposal in order to protect human health and the environment against the adverse effects of hazardous
waste is called
The convention was adopted on March 22, 1989, and entered into force on May 5, 1992.
Q. 4306
👁 0 views
'Zoonosis' refers to any disease or infection that is naturally transmissible from
(i) human to human
(ii) animal to human
(iii) animal to animal
(iv) bird to animal
Select the correct answer using the codes given below.
(i) human to human
(ii) animal to human
(iii) animal to animal
(iv) bird to animal
Select the correct answer using the codes given below.
A zoonosis is any disease or infection that is naturally transmissible from vertebrate animals to humans.
Q. 4296
👁 2 views
Which of the following Protocols/Conventions is for protecting biological diversity from the risks
posed by genetically modified organism?
- Correct answer: A. Cartagena Protocol
- Key concept: It governs biosafety to protect biological diversity from potential risks of genetically modified organisms (GMOs) through risk assessment and labeling.
- Why correct: It specifically deals with transboundary movement of GMOs and risk management to prevent harm to ecosystems.
- Why others are incorrect:
- Nagoya Protocol focuses on access to genetic resources and fair sharing of benefits, not biosafety.
- Bonn Convention (and related Ramsar/CMS) centers on migratory species conservation, not GMO risks.
- Vienna Convention relates to the ozone layer and does not address GMOs.
- Exam tip: Remember “biosafety = Cartagena Protocol.”
Q. 4242
👁 0 views
What is the full form of ChatGPT?
ChatGPT (Chat Generative Pre-trained Transformer) is a chatbot developed by OpenAI and launched on November 30, 2022.
Q. 4235
👁 1 views
Nucleus is absent in
Correct answer: A
- Reason: Mature human erythrocytes (RBCs) are enucleated; they lose their nucleus to maximize space for hemoglobin that carries oxygen.
- Key concept: Enucleation reduces cell size while increasing hemoglobin content; nucleus absent in mature RBCs but present in many other blood cells and stem/cancer cells.
- Note: Other options (cancer cell, stem cell, leukocyte) possess nuclei.
- Exam tip: If a statement mentions “nucleus absent,” think of mature erythrocytes first.
Q. 4234
👁 0 views
Oxidation is a process which involves
the term "oxidation" is defined as the addition
of oxygen/electronegative element to a substance or removal of hydrogen/electropositive element from a substance.
Q. 4233
👁 1 views
Root develops from which part of the Embryo?
In majority of the dicotyledonous plants, the direct elongation of the "radicle" leads to the formation of primary root which grows inside the soil.
Correct: 0/10
Wrong: 0/10
Correct
Wrong
Accuracy
0%