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20201.

Select the mismatchA. Frankia AlnusB. Rhodospirillum MycorrhizaC. Anabaena Nitrogen fixerD. Rhizobium Alfa-fa

Answer» Correct Answer - B
Among the given options, only option (b) is mismatched. Rhodospirillum is a free living nitrogen-fixing bacteria. Mycorrhiza is the symbiotic association of a fungus with the root of a higher plant.
20202.

Using inert electrode, electrolysis is done in the aqueous solution of sodium sulphate, What are the products obtained at cathode and at anode ?(a) H2 , O2(b) O2 , H2(c) O2 , Na(d) O2 , SO2

Answer»

H2 , O2 are the products obtained at cathode and at anode

20203.

Name the electrode used as cathode in electrorefining of impure copper.

Answer»

Impure copper plates act as anode & thin plates of pure copper act as cathode.

20204.

Name the inert electrode used in the electrolysis of acidified water.

Answer»

The platinum or carbon electrodes are inert.

20205.

Describe the Diphyodont and Thecodont characteristics of human dentition.

Answer»

1. Thecodont: It is a dentition in which the teeth are placed in the sockets of jawbones. 

2. Diphyodont: It is a dentition in which the teeth appear twice in the lifetime of man. They are milk teeth and permanent teeth.

20206.

Assertion `:-` Smallest blood cell is RBC Reason `:-` Platelets are cell fragments not true cells.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.C. If Assertion is True but the Reason is False.D. If both Assertion & Reason are False

Answer» Correct Answer - B
20207.

Which of the following is not an advantage of computerised accounting system a) Efficient record keeping b) Ensures effective control over the system. c) Generation of reports and information in fixed format d) Economy in the processing of accounting data.

Answer» c) Generation of reports and information in fixed format
20208.

Arrange the organs according to the mechanism of hearing. Oval window, Perilymph, Organ of Corti, Ear Ossicles, Pinna, Tectorial membrane, Endolymph, Auditory canal, auditory nerve, brain

Answer»

Pinna → Auditory canal → Ear ossicles → oval window → Perilymph → Endolymph → Organ of Corti → Auditory nerve → Brain

20209.

Differentiate between Generic software and Specific Software on basis of cost of installation and maintenance

Answer» Cost of installation and maintenance is generally low with Generic Software and is relatively high with Specific software
20210.

Which of the following situations may not require the use of null value a) When a particular attribute does not apply to an entity. b) Value of an attribute is unknown, although it exist, c) Unknown because it does not exist. d) Multi value attributes may be nested (or grouped) to constitute complex ones.

Answer» Correct Answer - d
20211.

Analyse the table and fill in the blanks given in the table with appropriate words. Rods ........ No ability to detect colour .......... .......... Cone pigments .......... Cone shaped Only one type .......... .......... Photopic vision

Answer»
 Rods  Cones
No ability to detect colour Ability to detect
 Rhodopsin Cone pigments
 Rod shaped  Cone shaped
Only one type  Three type
 Scotopic Photopic vision
20212.

A porcelain dish is used for....

Answer»

A porcelain dish is used for evaporation.

20213.

ESV stands for …………(a) Endocard Systolic Volume (b) End Systolic Volume (c) Endocard Sound Volume (d) Endocard Sinoatrial Volume

Answer»

(b) End Systolic Volume

20214.

Arteries have thick elastic walls but viens do not need thick wall.Answer the above statement with scientific reason.

Answer»

Because arteries need to carry pressurised blood from the heart all throughout the body it has to be pressurized to stop back flow of blood into the heart veins carry deoxygenated blood which is not pressurised so it can be thin hence arteries carry pressurised blood so it is thick so that it does not explode.

20215.

Assertion `:-` End systolic volume is `50ml` Reason `:-` Stroke volume is `70ml`A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.C. If Assertion is True but the Reason is False.D. If both Assertion & Reason are False

Answer» Correct Answer - A
20216.

Assertion `:-` Arteries are non`-`collapsable Reason `:-` Wall of arteries are thick and more muscular.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.C. If Assertion is True but the Reason is False.D. If both Assertion & Reason are False

Answer» Correct Answer - A
20217.

Air can hold only a certain amount of water vapor at a given temperature. Explain. Also tell that how the air changes its capacity to hold water vapor when change in temperature occurs?

Answer»

The maximum amount of water vapor that can be in the air depends on the air temperature. Warmer air can hold more water vapor within it. That's why the muggiest days usually happen at the height of summer heat. But as the temperature goes down, the air can hold less vapor and some of it turns into liquid water.

20218.

Assertion `:-` The type of dentition in humans is called diphyodont. Reason `:-` A set of temoporary milkteeth is replaced by a set of permanent teeth in adult.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.C. If Assertion is True but the Reason is False.D. If both Assertion & Reason are False

Answer» Correct Answer - A
20219.

Assertion `:-` Small intestine is principal organ for absorptions nuttrients. Reason `:-` The digestion is completed here and the final products of digestion are absorbed through blood into the mucosa.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.C. If Assertion is True but the Reason is False.D. If both Assertion & Reason are False

Answer» Correct Answer - C
20220.

Assertion `:-` Rennin is a proteolytic enzyme. Reason `:-` It helps in digestion of milk protein.A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.C. If Assertion is True but the Reason is False.D. If both Assertion & Reason are False

Answer» Correct Answer - A
20221.

Explain why does coffee taste bitter even though it's an acid?

Answer»

Chlorogenic acids have an impact on the bitter taste later on. Chlorogenic acid degradation products make up 60 – 70 % of the bitter taste in coffee. With up to 13% in raw coffee, these polyphenols play an essential role in the formation of all kinds of flavour-and-taste-active compounds in coffee. Besides, recent research shows that chlorogenic acids have all kinds of health beneficial effects such as reducing blood pressure, improving glucose regulation thus being Diabetes Type II preventive, as well as being anti-inflammatory. 

Caffeine is alkaline in nature even though Coffee is a weak acid, its pH value is around 5. And the pH value varies from one to other coffee beans. Because of presence of ingredients it may have bitter taste.

20222.

Serratiopeptidase is a proteolytic enzyme isolated from

Answer»

Serrapeptase is an enzyme isolated from bacteria found in silkworms.

20223.

In which ions absence are acids not able to conduct electricity ?a)In the absence of Hydrogen ionsb) In the absence of Hydronium ions

Answer»

The acidic behaviour of acids is due to the presence of hydrogen ions, [H+ (aq) ions], in them. The acid produces hydrogen ions only in the presence of water. So in the absence of water, an acid will not form hydrogen ions and hence will not show its acidic behaviour.

20224.

Penicillin is a

Answer»

Penicillins are a group of antibacterial drugs that attack a wide range of bacteria. They were the first drugs of this type that doctors used. The discovery and manufacture of penicillins have changed the face of medicine, as these drugs have saved millions of lives.

20225.

On which chromosome in humans, is the genetic defect for the Huntington disease located?

Answer»

Chromosome 4

20226.

Genetic code is

Answer»

The genetic code is a set of rules defining how the four-letter code of DNA is translated into the 20-letter code of amino acids, which are the building blocks of proteins.

20227.

How do seals adapt to their natural habitat? Explain.

Answer»

By developing a thick layer of fat (blubber) below their skin that acts as an insulator and reduce excess heat.

20228.

Why do bacteria produce Restriction enzyme ?

Answer»

Restrict the propagation of any foreign DNA in a bacterium by recognizing and cutting it at specific DNA sequence.

20229.

Why is the DNA of microorganism not degraded by the Restriction enzyme it produces ?

Answer»

By adding methyl group to one or two bases within the sequence recognized by RE/restriction- modification system.

20230.

Why we should accept GMO food

Answer»

Proponents of genetically modified organisms, or GMOs, say that farmers who grow these crops are able to use fewer environmentally damaging pesticides. The increased yields of GMO crops, they also argue, are essential to feeding the world's growing population.

20231.

At normal pH, pencils remains

Answer»

At normal pH, pencils remains: aqueous phase

20232.

Penicillin is produced by 

Answer»

Antibiotic Fermentation.

20233.

Do you think that friends can influence one to take alcohol/drugs? If yes, how may one protect himself/herself from such an influence?

Answer»

Yes, friends can influence one to take drugs and alcohol. A person can take the following steps for protecting himself/herself against drug abuse:

  •  Increase your will power to stay away from alcohol and drugs. One should not experiment with alcohol for curiosity and fun.
  •  Avoid the company of friends who take drugs.
  •  Seek help from parents and peers.
  •  Take proper knowledge and counselling about drug abuse. Devote your energy in other extra-curricular activities.
  • Seek immediate professional and medical help from psychologists and psychiatrists if symptoms of depression and frustration become apparent.
20234.

The micro RNA together with RNA-induced silencing complex binds to

Answer»

RNA-induced silencing complex, or RISC, is a multiprotein complex that incorporates one strand of a small interfering RNA (siRNA) or micro RNA (miRNA). RISC uses the siRNA or miRNA as a template for recognizing complementary mRNA. When it finds a complementary strand, it activates RNase and cleaves the RNA.

20235.

There’s a wonderful new restaurant opened in town. You _____ go there. A) shouldn’t B) must C) don’t have to D) should

Answer»

Correct option is D) should

20236.

Micropyle in seed helps in the entry ofA. Male gameteB. Pollen tubeC. WaterD. Gases

Answer» Correct Answer - C
(C) Micropyle of seed is involved in the passage of water.
20237.

Which region is rich in species diversityA. North PoleB. Temperate regionC. Tropical regionD. South Pole

Answer» Correct Answer - C
(C) Tropical region is rich in species diversity.
20238.

Homo sapiens/Homo Erectus evolved inA. MioceneB. PlioceneC. OligoceneD. Pleistocene

Answer» Correct Answer - D
(D) Homo erectus evolved during pleistocene.
20239.

If Eye : Cataract, then Lungs : ? Select the correct analogy from below options.1. Colitis2. Bronchitis3. Hepatitis4. Jaundice

Answer» Correct Answer - Option 2 : Bronchitis

cataract is a cloudy area in the lens of the eye that leads to a decrease in vision.

Similarly;

Bronchitis is an inflammation of the lining of your bronchial tubes, which carry air to and from your lungs. 

Hence, "Bronchitis" is the correct answer.

20240.

My mother and father are my ______. A) owners B) friends C) relatives D) parents

Answer»

Correct option is D) parents

20241.

Frequecy of A allele is 0.6 and that of a allele is 0.4 what would be frequency of heterozygotes in random mating polultion?A. 0.36B. 0.16C. 0.24D. 0.48

Answer» Correct Answer - D
(D) Heterozygote is 2Aa = 2 x 0.6 x 0.4 =0.48
20242.

Which part of the brain is involved in loss of control when a person drinks alcoholA. CerebellumB. Pons varoliiC. Medulla oblongatD. Cerebrum

Answer» Correct Answer - A
(A) In drunk person, the part of brain to be affected first in loss of control is cerebellum.
20243.

Choose the antonym of the underlined word. I am going to buy a pair of new shoes next week. A) cheap B) old C) bad D) small

Answer»

Correct option is B) old

20244.

We’re going to have our house ______. The decorators are coming next week. A) done up B) done in C) made over D) made away with

Answer»

Correct option is A) done up

20245.

What makes me _____ all the time, stuffs up my nose, and makes my eyes _____? A) cough / water B) to cough / to water C) coughing / watering D) coughs / water

Answer»

Correct option is A) cough / water

20246.

He asked me what was ______ in the street outside. A) succeeding B) making out C) doing up D) going on

Answer»

Correct option is D) going on

20247.

You can borrow my tennis racquet, but you _____ keep it very well. It was very expensive. A) don’t have to B) should C) must D) have to

Answer»

Correct option is C) must

20248.

He saw me _____ in the garden and asked me what I _____. A) working / was doing B) work / was doing C) to work / did D) working / done

Answer»

Correct option is A) working / was doing

20249.

Always put medicine after _____ it. A) take B) took C) you took D) taking

Answer»

Correct option is D) taking

20250.

It’s very expensive _____ by ship. A) to go B) is going C) go D) for going

Answer»

Correct option is A) to go