CBSE Questions for Class 8 General Knowledge India: Science And Technology Quiz 1 - MCQExams.com

Which of the following cyber attacks crippled most of the countries in the world?
  • Ransomware
  • GhostNet
  • StarDust
  • Cleaver
What is "NMD"?
  • New Monroe Doctrine
  • New Monetary Device
  • National Meteorological Department
  • Space-based anti-ballistic missile system being set up by the US
One of the Himalayan peaks that lies between Tibet and Nepal is _____________.
  • Mount Godwin Austin
  • Mount Everest
  • Kanchenjunga
  • Nanga Parbat
Where are MIG engines assembled?
  • Ozar
  • Bangalore
  • Nasik
  • Koraput
Organization which are formed to promote their interest are known as _______________.
  • Sectional groups
  • Movement groups
  • Interest groups
  • Specialized groups
Match List - I and List - II and select the correct answer using the codes given below the lists :
List - I List - II
A. SriharikotaAtronomical observatory
B. KavalurFast breeder reactor
C. KalpakkamNuclear reactor
D. TrombaySpace launching centre
  • A-3, B-4, C-2, D-1
  • A-4, B-2, C-1, D-3
  • A-4, B-1, C-2, D-3
  • A-1, B-4, C-3, D-2
Name the project which aims to ensure that government services are available to citizens electronically ?
  • Digital India Project
  • Ebiz project
  • E-kranti Project
  • National Optical Fibre Network Project
Bt seed is associated with ___________.
  • Rice
  • Wheat
  • Cotton
  • Oilseed
Insect resistant cotton plants have been genetically engineered by inserting a gene from a/ an _____________.
  • Virus
  • Bacterium
  • Insect
  • Plant
Which space shuttle met with an accident at the time of landing, in which Indian Astronaut Kalpana Chawla died in Febrauary 2003?
  • Colombia
  • Challenger
  • Discovery
  • PSLV
A genetically engineered form of brinjal known as the Bt brinjal has been developed. The objective of this is ___________________.
  • To make it pest-resistant
  • To improve its taste and nutritive qualities
  • To make it drought resistant
  • To make its shelf-life longer
What is the purpose of the 'restriction enzymes' used in the genetic engineering?
  • Restricts the protein synthesis in cells
  • Cut DNA at specific base sequence
  • Degrade harmful protein
  • Join different DNA fragments
Which one among the following is the 'chemical knives' (scissors) used in genetic engineering?
  • Polymerase
  • Ligase
  • Endonuclease
  • Plasmid
The cutting of DNA at specific locations became possible with the discovery of _________.
  • Cloning
  • Vectors
  • Restriction endonuclease
  • Restriction enzyme
The method of reproduction of new plants by cells instead of seed is known as _____________.
  • Tissue culture
  • Mutation
  • Antibiosis
  • Recombination
Transgenic plants are _______________________.
  • Produced by a somatic embryo in artificial medium
  • Generated by introducing foreign DNA into a cell and regenerating a plant from that cell
  • Produced after protoplast fusion in artificial medium
  • Grown in artificial medium after hybridization in the field
Which of the following is not correct regarding Bioculture?
  • Bioculture defines the activity and consolidation of ideas created when the human intersects with the technological
  • It comprises the emerging area bounded by the medical sciences, social science, area studies, culture studies, biotechnology, disability studies, the humanities, and the economic and global environment
  • It assumes that in bioculture there's a diverse way to know that workings of the body and mind, and that these are primarily culturally derived, and an experts way of knowing produces specific strong results
  • Here the study of body parts and the minds are not included
What is the purpose of restriction enzymes used in genetic engineering?
  • Restricts the protein synthesis in cells
  • Cuts DNA at specific base sequence
  • Degrade harmful proteins
  • Join different DNA fragments
Consider the following statements
$$1.$$ Embryonic stem cells can now be turned into oxygen-carrying red blood cells.
$$2.$$ Artificial blood for transfusion still requires refrigeration just like ordinary donor blood.
Which statement is/ are correct?
  • Only $$1$$
  • Only $$2$$
  • Both $$1$$ and $$2$$
  • Neither $$1$$ and $$2$$
Consider the following statements
$$1.$$ Introduction of foreign genes for improving genotype is genetic engineering.
$$2.$$ Genetically engineered human insulin is manufactured by the use of E.coil.
$$3.$$ Advancement in genetic engineering has been possible due to discovery of restriction endonuclease.
$$4.$$ First hormone prepared by genetic engineering is insulin.
Which of the statements given above are correct about genetic engineering?
  • $$1, 2, 3$$ and $$4$$
  • $$1, 2$$ and $$3$$
  • $$1$$ and $$2$$
  • $$1, 3$$ and $$4$$
Plasminogen activator or enzyme tPA is used for
  • Stimulating thromboplastin production
  • Clearing turbidity of juices
  • Maintaining plasma content
  • Dissolving blood clots
Researchers are manufacturing Genetically Modified (GM) fungi to produce __________________.
  • Cheaper biofuel
  • Generic drug for treatment of cancer
  • Food supplement
  • Edible oil
At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us?
$$1.$$ It is possible to know the pedigree of livestock.
$$2.$$ It is possible to understand the causes of all human diseases.
$$3.$$ It is possible to develop diseases resistant animal breeds.
Which of the statement(s) given above is/ are correct?
  • $$1$$ and $$2$$
  • Only $$2$$
  • $$1$$ and $$3$$
  • $$1, 2$$ and $$3$$
Consider the following statements about world's first cloned pashmina goat
$$1.$$ Noori is the world's first cloned Pashmina goat.
$$2.$$ It was developed by the scientists at the Sher-e-kashmir Agriculture University for Science and Technology on March $$9, 2012$$.
Which of the following statement(s) given above is/ are correct?
  • Only $$1$$
  • Only $$2$$
  • $$1$$ and $$2$$
  • Neither $$1$$ or $$2$$
By using which one of the following techniques, is DNA fingerprinting done?
  • ELISA
  • RIA
  • Northern blotting
  • Southern blotting
Consider the following statements
$$1.$$ Antibiotic resistance in micro-organisms present in alimentary canal.
$$2.$$ Allergic reaction.
$$3.$$ Toxicity
Which of the above risk(s) is/ are associated with genetically modified food?
  • Only $$1$$
  • Only $$2$$
  • $$1$$ and $$2$$
  • $$1, 2$$ and $$3$$
Consider about the Biomaterial.
$$1.$$ It is may matter, surface, or construct that interacts with biological systems and the study of biomaterials is called biomaterials science.
$$2.$$ Biomaterials science encompasses elements of medicine, biology, chemistry, tissue engineering and materials science.
$$3.$$ As a science, biomaterials must be about five hundred years old.
Which of the statements given above is/ are correct?
  • $$1$$ and $$2$$
  • $$2$$ and $$3$$
  • Only $$3$
  • All of these
Which one is not False regarding Bionic architecture?
  • It is a movement for the design and construction of expressive building whose layout and lines borrow from natural (i.e. biological) forms.
  • It sets itself in opposition to traditional rectangular layouts and design schemes by using curved forms and surfaces reminiscent of structures in biology and fractal mathematics.
  • One of the tasks set themselves by the movement's early pioneers was the development of aesthetic and economic justifications for their approach to architecture.
  • All of the given statements.
Which is true regarding Bio physical Economics?
$$1.$$ It accounts the overall gathering of the life forms in a particular areas whether it is detrimental to environment or not.
$$2.$$ It is a school of heterodox economics that applies the laws of thermodynamics to economic theory.
Select the correct answer using the codes given below.
  • Only $$1$$
  • Only $$2$$
  • $$1$$ and $$2$$
  • None of the above.
A Cryoprotectant is a substance that is used to protect biological tissue from freezing damage (i.e., that due to ice formation). Which of the following can be used by different species as Cryoprotectant?
$$1.$$ Sugars $$2.$$ Fats $$3.$$ Glycerols
Select the correct answer using the codes given below.
  • $$1$$ and $$2$$
  • $$2$$ and $$3$$
  • $$1$$ and $$3$$
  • Only $$3$$
What do you mean by Biocompatibility?
$$1.$$ It is related to the behavior of biomaterials in various contexts.
$$2.$$ The term refers to the ability of a material to perform with an appropriate host response in a specific situation.
$$3.$$ It is actually a self sufficiency of an organism to ensure its ability to withstand the adverse effect during grafting of a particular organ which is present in every animals.
$$4.$$ Biocompatibility is the capability of a prosthesis implanted in the body to exist in harmony with tissue without causing deleterious changes.
Select the correct answer using the codes given below.
  • $$1, 2$$ and $$3$$
  • $$2, 3$$ and $$4$$
  • $$2$$ and $$4$$
  • $$1, 2$$ and $$4$$
What is Virotherapy?
  • It is a therapy of treat viral infection in human beings.
  • It is a treatment using biotechnology to convert viruses into therapeutic agents by reprogamming viruses to treat diseases.
  • There are two main branches of virotherapy anti-cancer oncolytic viruses and viral immunotherapy.
  • It is actually used to change harmful viruses into useful one.
Consider the following statements
$$1.$$ Horizontal gene transfer (HGT) refers to the transfer of genes between organisms in a manner other than traditional reproduction.
$$2.$$ Horizontal gene transfer is the primary reason for bacterial antibiotic resistance and plays an important role in the evolution of bacteria that can degrade novel compounds such as human-created pesticides.
Select the correct answer using the codes given below.
  • Only $$1$$
  • Only $$2$$
  • Both $$1$$ and $$2$$
  • Neither $$1$$ nor $$2$$
Which is/ are true regarding Biotechnology?
$$1.$$ It is the application of scientific and engineering principles to the processing of materials by biological agents to provide goods and services.
$$2.$$ Yet the formation of a new field, genetic engineering, would soon bring biotechnology to the forefront of science in society, and the intimate relationship between the scientific community, the public, and the government would ensue.
$$3.$$ Biotechnology arose from the field of zymotechnology, which began as a search for a better understanding of industrial fermentation, particularly beer.
$$4.$$ Genetic engineering in biotechnology stimulated hopes for both therapeutic proteins, drugs and biological organisms themselves, such as seeds, pesticides, engineered yeasts, and modified human cells for treating genetic diseases.
$$5.$$ Biotechnology comes under the broad heading of Genetic Engineering.
Select the correct answer using the codes given below.
  • $$2, 3$$ and $$4$$
  • $$1, 3, 4$$ and $$5$$
  • $$1, 2, 3$$ and $$4$$
  • $$2$$ and $$4$$
Which one is known as cruelty free meat?
  • In vitro meet.
  • Meat from natural dead animal.
  • Plant products with animal nutrients.
  • None of the above.
Consider the following items
$$1.$$ Bone plates
$$2.$$ Bone cement
$$3.$$ Contact lenses
$$4.$$ Breast implants
$$5.$$ Artificial ligaments and tendons
$$6.$$ Dental implants for tooth-fixation
$$7.$$ Joint replacements
$$8.$$ Skin repair devices (artificial tissue)
In which of the following items, biomaterials are frequently used.
  • $$1, 3, 4, 5$$ and $$7$$
  • $$2, 3, 5, 7$$ and $$8$$
  • $$1, 4, 5, 6, 7$$ and $$8$$
  • $$1, 2, 3, 4, 5, 6, 7$$ and $$8$$
Which of the following is not true regarding biometrics?
  • It is used in computer science as a form of identification and access control of humans by their characteristics or traits.
  • Biometric identifiers are often categorised as physiological versus behavioural characteristics.
  • It is not possible to use this technology, to identify individuals in groups that are under surveillance.
  • All of the above.
Nanorobots (nanobots) ____________.
  • Do not exist yet
  • Exist in experimental form in laboratories
  • Are already used in nanomedicine to remove plaque from the walls of arteries
  • Will be used by NASA in the next unmanned mission to Mars
The prefix 'nano' from a _______________.
  • French word meaning billion.
  • Greek word meaning dwarf.
  • Spanish word meaning particle.
  • Latin word meaning invisible.
Which of the following cannot be associated with aspects of biotechnology?
$$1.$$ Generating higher crop yields with fewer inputs.
$$2.$$ Lowering volumes of agricultural chemicals.
$$3.$$ Helps in enhanced nutrition profile.
$$4.$$ Allows farmers to increase filling farmland.
Which of the following statements given above is/ are correct?
  • $$1, 2$$ and $$3$$
  • $$2, 3$$ and $$4$$
  • Only $$4$$
  • All of these
Nano technology, in other words, is ______________.
  • Carbon engineering
  • Atomic engineering
  • Small technology
  • Microphysics
The most important property of nano materials is ___________.
  • Force
  • Friction
  • Pressure
  • Temperature
Scientists have developed the peptide based platforms to cure cancer. How?
$$1.$$ They used bacterial fermentation to bind DNA or small interfering RNA and delivering them into cells to target tumours.
$$2.$$ These are helpful in silencing the targeted genes.
$$3.$$ These chimeric peptides have the capabilities to degenerate the tumours.
Select the correct answer using the codes given below.
  • Only $$1$$
  • Only $$2$$
  • $$1$$ and $$3$$
  • All of the above.
Consider about the golden rice
$$1.$$ It is variety of Oryza glaberrima.
$$2.$$ It is grown where there is a shortage of dietary vitamin-A.
$$3.$$ Carotene give carrots their orange colour and is the reason why genetically modified rice is golden.
$$4.$$ It contains two bacterium and one daffodilas genes.
Select the correct answer using the codes given below.
  • $$1, 2$$ and $$3$$
  • $$2, 3$$ and $$4$$
  • $$2$$ and $$3$$
  • $$1, 2, 3$$ and $$4$$
Which of the following can be the best sources for the bioplastics?
$$1.$$ Vegetable fats and oils
$$2.$$ Corn starch
$$3.$$ Microbiota
$$4.$$ Azolla
$$5.$$ Pea starch
Select the correct answer using the codes given below.
  • $$1, 2, 4$$ and $$5$$
  • $$1, 2, 3$$ and $$5$$
  • $$2, 3, 4$$ and $$5$$
  • All of the above.
Drop-in biofuels can be obtained from
$$1.$$ Crop residue
$$2.$$ woody biomass
$$3.$$ paddy extract
$$4.$$ algae
$$5.$$ dedicated energy crops
Select the correct answer using the codes given below.
  • $$1, 2$$ and $$3$$
  • $$2, 3, 4$$ and $$5$$
  • $$1, 2, 4$$ and $$5$$
  • All of these
How many oxygen atoms lined up in a row would fit in a one nanometer space?
  • None; an oxygen atom is bigger than $$1\ nm$$
  • One
  • Seven
  • Seventy
The cloned sheep 'Dolly' was created through which of the following technique given below?
  • Gene transfer
  • Nuclear transfer
  • Somatic cell transfer
  • Germinal cell transfer.
In addition to fingerprint scanning, which of the following can be used in the biometric identification of a person?
$$1.$$ Iris scanning
$$2.$$ Retinal scanning
$$3.$$ Voice recognition
Select the correct answer using the codes given below.
  • Only $$1$$
  • $$2$$ and $$3$$
  • $$1$$ and $$3$$
  • $$1, 2$$ and $$3$$
Genetically modified (GM) crops contain modified genetic material due to
$$1.$$ Introduction of new DNA
$$2.$$ Removal of existing DNA
$$3.$$ Introduction of RNA
$$4.$$ Introduction of new traits
Select the correct answer using the codes given below.
  • $$1$$ and $$2$$
  • $$1, 2$$ and $$3$$
  • $$3$$ and $$4$$
  • $$1, 2$$ and $$4$$
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