Science And Technology - MCQ Online Test (3) - UPSC MCQ

iver, yellow color due to high bilirubin levels in blood

The distinction is that eukaryotic cells have a "true" nucleus containing their DNA, whereas prokaryotic cells do not have a nucleus. Both eukaryotes and prokaryotes contain large RNA/protein structures called ribosomes, which produce protein

Blood group O is a universal donor and can be donated to anyone.

They are found in nature 2. They are always
unsaturated 3. They increase level of LDL (i.e. Bad Cholesterol) 4. They decrease the level of HDL (i.e. Good Cholesterol) 5. They are outcome of the Partial Hydrogenation and not the complete Hydrogenation, because complete Hydrogenation would end the double bonds.

Catenation is the linkage of atoms of the same element into longer chains. Catenation occurs most readily in carbon, which forms covalent bonds with other carbon atoms to form longer chains and structures. This is the reason for the presence of the vast number of organic compounds in nature

Sonar is a modern technology which helps us to track submarines, fish, ship wrecks, map the seabed and for other navigational purposes. The four main factors that affect the performance of a sonar system are a high power transmitter, an efficient transducer, a sensitive receiver and an acoustic communication system.

Enzymes are proteins that allow certain chemical reactions to take place much quicker than the reactions would occur on their own. Enzymes function as catalysts, which means that they speed up the rate
at which metabolic processes and reactions occur in living organisms.

Liquid aerosol is fog and dust so d

The number of bacteria in one hour have been formed by half the number of bacteria in previous minute since bacterial cells divides into two each minute, therefore the answer is 59 minutes.

Jet engines and rockets work on the same
principle. They produce thrust through an internal pressure difference and, as explained by Newton’s Third Law of Motion, eject exhaust gases in an equal and opposite direction. The main difference between them is that jets get the oxygen to burn fuel from the air and rockets carry their own oxygen, which allows them to operate in space. This also leads to a second major difference. Jet engines have two openings (an intake and an exhaust nozzle). Rocket engines only have one opening (an exhaust nozzle).

The Coriolis effect is caused by the rotation of the Earth and the inertia of the mass experiencing the effect. It is a apparent force and not real force.

A macromolecule is a very large molecule
commonly created by polymerization of smaller subunits. In biochemistry, the term is applied to the three conventional biopolymers (nucleic acids, lipids, proteins and carbohydrates), as well as non-polymeric molecules with large molecular mass such as lipids and macrocycles. The individual constituent molecules of macromolecules are called monomers (mono=single, meros=part). Some examples of macromolecules are bio-polymers (DNA, carbohydrates, proteins, and lipids), synthetic polymers (plastics, synthetic fibers, and synthetic rubber), graphene, and carbon nano tubes

The Scheme is being operated on a national basis and provides certification and labeling for house-hold and other consumer products which meet certain
environmental criteria along with quality requirements prescribed in relevant Indian Standards for the product. For the implementation of the scheme, BIS is
responsible.

Open Source Drug Discovery (OSDD) is an.
initiative of the CSIR not the WHO. Open Source Drug Discovery is a Council of Scientific and Industrial Research, India (CSIR)-led Team India Consortium with global participation. Offering a collaborative drug discovery platform for neglected tropical diseases like leishmaniasis, which draw limited attention of research, based pharmaceutical enterprises

What is the difference between Carbon and
silicon?
- Carbon is a nonmetal, and silicon is a metalloid.
- Carbon and silicon have the same common electron configuration as s2, p2. But in silicon, the electrons are spread into the 3rd energy level, whereas in carbon it is
only to the 2nd energy level. This difference occurs because of carbon in the 2nd period, but silicon in the 3rd.
- Silicon is less reactive than carbon.
- Silicon atom is larger than the carbon atom.
- Pure carbon compounds occur in nature such as diamond, graphite and coal. But pure silicon compounds are hardly found. They exist as oxides or silicates.

Designed by ISRO. answer is b. Used for solving complex aeronautical problems
SAGA built by ISRO, is capable of performing at 450 teraflop/s

Doesn't recognizes territorial claims.
The Antarctic Treaty and related agreements, collectively known as the Antarctic Treaty System (ATS), regulate international relations with respect to
Antarctica, Articles of the Antarctic Treaty [edit]
Article 1 – The area is to be used for peaceful purposes only; military activity, such as weapons testing, is prohibited but military personnel and equipment may be used for scientific research or any other peaceful purpose;
Article 2 – Freedom of scientific investigations and cooperation shall continue;
Article 3 – Free exchange of information and personnel in cooperation with the United Nations and other international agencies;
Article 4 – The treaty does not recognize, dispute, nor establish territorial sovereignty claims; no new claims shall be asserted while the treaty is in force;
Article 5 – The treaty prohibits nuclear explosions or disposal of radioactive wastes;

Mistral helps in clearing the sky fresh weather in summer mistral

Only tropical cyclone in India, as it is part of
tropical and subtropical belt.

Arabian sea is less land locked than that of Bay of Bengal.

Heavy precipitation with hails occurs very few minutes. Rapid precipitation from cumulonimbus clouds is possible due to Langmuir process where large droplets can grow rapidly by coagulation with small droplets

Society for applied microwave electronic
engineering and research

More temperature and more CO₂ in atmosphere results rice to release more CH₄

Coal-fired power plants. Mercury exists naturally in coal, making coal-fired power plants the largest source of mercury pollution. Coal accounts for nearly 50 percent of the electricity generated and almost 50 tons of mercury emissions annually

Project Elephant (PE) was launched by the
Government of India in the year 1992 as a Centrally
Sponsored Scheme with following objectives:
• To protect elephants, their habitat & corridors
• To address issues of man-animal conflict
• Welfare of captive elephants

The Cartagena Protocol on Bio safety is a legally binding protocol to the Convention on Biological Diversity (CBD). It assists developing countries in building their capacity for managing modern
biotechnology
• It creates an advanced informed agreement (AIA) procedure that requires exporters to seek consent from importing countries before the first shipment of LMOs meant to be introduced into the environment (e.g. seeds for planting,
fish for release, and microorganisms for
bioremediation)
• It establishes an internet-based “Bio safety
Clearing-House” to help countries exchange scientific, technical, environmental and legal information about LMOs.

Neritic zone- shallow part, having good sunlight and oxygen.
Oozes are organic .
Calcareous forms large part in earth

It works under the ministry of women and child development.

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service

1. Olive oil has more than 70% -monounsaturated fats, meaning a double bond in its structure
2. Olive oil reduces the risk of fatty liver disease
3. Even though an equivocal association was observed for the consumption of total monounsaturated fatty acids (MUFA) and the risk of breast cancer, there exists an inverse association in the case of oleic acid