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- Question 1 of 20
1. Question
Assertion (A) : Unsaturated fats are more reactive compared with the saturated fats.
Reason (R) : Unsaturated fats have only single bonds in their structure. [2003]CorrectAssertion is true because unsaturated fats are more reactive compared with saturated fats due to multiple bonds present between carbon atoms. The reason is false because unsaturated fats have atleast double bond in their structure.
IncorrectAssertion is true because unsaturated fats are more reactive compared with saturated fats due to multiple bonds present between carbon atoms. The reason is false because unsaturated fats have atleast double bond in their structure.
UnattemptedAssertion is true because unsaturated fats are more reactive compared with saturated fats due to multiple bonds present between carbon atoms. The reason is false because unsaturated fats have atleast double bond in their structure.
- Question 2 of 20
2. Question
Consider the following statements: [2003]
1. Molasses is a by-product of sugar production process.
2. Bagasse obtained in the sugar mills is used as a fuel in the boilers to generate steam for the sugar factories.
3. Sugar can only be produced from sugarcane as the raw material.
Which of these statements are correct?CorrectMolasses is by-product of sugar production process and bagasse of sugar used as a fuel in boilers for sugar factories. But sugar produced from sugar cane and also from sugar beet.
IncorrectMolasses is by-product of sugar production process and bagasse of sugar used as a fuel in boilers for sugar factories. But sugar produced from sugar cane and also from sugar beet.
UnattemptedMolasses is by-product of sugar production process and bagasse of sugar used as a fuel in boilers for sugar factories. But sugar produced from sugar cane and also from sugar beet.
- Question 3 of 20
3. Question
Assertion (A) : Cellulose is used in making shatterproof glass.
Reason (R) : Polysaccharides are not soluble in water. [2006]CorrectCellulose is not soluble in water that is why it is used in making shatter–proof glass. Cellulose is a poly saccharide.
IncorrectCellulose is not soluble in water that is why it is used in making shatter–proof glass. Cellulose is a poly saccharide.
UnattemptedCellulose is not soluble in water that is why it is used in making shatter–proof glass. Cellulose is a poly saccharide.
- Question 4 of 20
4. Question
Which one of the following parts of the pitcher plant becomes modified into a pitcher? [2007]
CorrectIn pitcher plant, the lamina of leaf is modified into pitcher and the leaf apex gives rise to a coloured lid for attracting the insects.
IncorrectIn pitcher plant, the lamina of leaf is modified into pitcher and the leaf apex gives rise to a coloured lid for attracting the insects.
UnattemptedIn pitcher plant, the lamina of leaf is modified into pitcher and the leaf apex gives rise to a coloured lid for attracting the insects.
- Question 5 of 20
5. Question
Which of the following types of light are strongly absorbed by plants? [2007]
CorrectPhotosynthesis occurs between wavelengths of about 400 nm and 750 nm. Red and blue colour wavelength is categories in this wavelength. So, plants absorb these colours. Photosynthesis does not occur in the infra-red or in ultraviolet light.
IncorrectPhotosynthesis occurs between wavelengths of about 400 nm and 750 nm. Red and blue colour wavelength is categories in this wavelength. So, plants absorb these colours. Photosynthesis does not occur in the infra-red or in ultraviolet light.
UnattemptedPhotosynthesis occurs between wavelengths of about 400 nm and 750 nm. Red and blue colour wavelength is categories in this wavelength. So, plants absorb these colours. Photosynthesis does not occur in the infra-red or in ultraviolet light.
- Question 6 of 20
6. Question
Consider the following: [2008]
1. Rice fields
2. Coal mining
3. Domestic animals
4. Wet lands
Which of the above are sources of methane, a major greenhouse gas?CorrectRice fields, coal mining, domestic animal and wet lands all are the sources of methane.
IncorrectRice fields, coal mining, domestic animal and wet lands all are the sources of methane.
UnattemptedRice fields, coal mining, domestic animal and wet lands all are the sources of methane.
- Question 7 of 20
7. Question
Which one of the following is an insectivorous plant? [2008]
CorrectPitcher plant is an insectivorous plant. It feeds on living creatures including insects and small mammals. These plant attracts the prey with a smell of rotting meat. The victim is dissolved by plant enzymes.
IncorrectPitcher plant is an insectivorous plant. It feeds on living creatures including insects and small mammals. These plant attracts the prey with a smell of rotting meat. The victim is dissolved by plant enzymes.
UnattemptedPitcher plant is an insectivorous plant. It feeds on living creatures including insects and small mammals. These plant attracts the prey with a smell of rotting meat. The victim is dissolved by plant enzymes.
- Question 8 of 20
8. Question
Consider the following statements about probiotic food: [2008]
1. Probiotic food contains live bacteria which are considered beneficial to humans.
2. Probiotic food helps in maintaining gut flora.
Which of the statements given above is/are correct?CorrectProbiotics are the living microorganisms that are healthy for host organism. Lactic acid bacteria, Bifido bacteria are common type of microbes used as probiotics. Certain yeast and Bacilli may also useful. Probiotics are commonly consumed as a part of fermented food with specially added active live cultures such as yoghurt or as dietary supplements.
IncorrectProbiotics are the living microorganisms that are healthy for host organism. Lactic acid bacteria, Bifido bacteria are common type of microbes used as probiotics. Certain yeast and Bacilli may also useful. Probiotics are commonly consumed as a part of fermented food with specially added active live cultures such as yoghurt or as dietary supplements.
UnattemptedProbiotics are the living microorganisms that are healthy for host organism. Lactic acid bacteria, Bifido bacteria are common type of microbes used as probiotics. Certain yeast and Bacilli may also useful. Probiotics are commonly consumed as a part of fermented food with specially added active live cultures such as yoghurt or as dietary supplements.
- Question 9 of 20
9. Question
Consider the following statements: [2009]
1. Sweet orange plant is propagated by grafting technique.
2. Jasmine plant is propagated by layering technique.
Which of the statements given above is/are correct?CorrectGrafting is a most common method of vegetative propagation. In this method, parts of two plants are joined in such a way that they grow as a one plant. Sweet orange plant is propagated by grafting technique.
Layering is another type of vegetative propagation. In this method, roots are artificially induced on the stem branches before they are detached from the plant for propagation. Jasmine plant is propagated by this technique.IncorrectGrafting is a most common method of vegetative propagation. In this method, parts of two plants are joined in such a way that they grow as a one plant. Sweet orange plant is propagated by grafting technique.
Layering is another type of vegetative propagation. In this method, roots are artificially induced on the stem branches before they are detached from the plant for propagation. Jasmine plant is propagated by this technique.UnattemptedGrafting is a most common method of vegetative propagation. In this method, parts of two plants are joined in such a way that they grow as a one plant. Sweet orange plant is propagated by grafting technique.
Layering is another type of vegetative propagation. In this method, roots are artificially induced on the stem branches before they are detached from the plant for propagation. Jasmine plant is propagated by this technique. - Question 10 of 20
10. Question
In making the saffron spice, which one of the following parts of the plant is used? [2009]
CorrectSaffron is a spice obtained from the stigma of the flower of Crocus sativus Linnaeus.
IncorrectSaffron is a spice obtained from the stigma of the flower of Crocus sativus Linnaeus.
UnattemptedSaffron is a spice obtained from the stigma of the flower of Crocus sativus Linnaeus.
- Question 11 of 20
11. Question
Given below are the names of four energy crops. Which one of them can be cultivated for ethanol? [2010]
CorrectEthanol is produced in India from maize, sugarcane, starch, corn grain etc. Maize is easily available and maize is not costly for product as to economic concern.
IncorrectEthanol is produced in India from maize, sugarcane, starch, corn grain etc. Maize is easily available and maize is not costly for product as to economic concern.
UnattemptedEthanol is produced in India from maize, sugarcane, starch, corn grain etc. Maize is easily available and maize is not costly for product as to economic concern.
- Question 12 of 20
12. Question
Some species of plants are insectivorous. Why? [2010]
CorrectInsectivorous plants prey insects because most of the insectivorous plants grow in those area where there is deficiet of nitrogen in nutrients so they catch insect to fulfill its need of nutrients.
IncorrectInsectivorous plants prey insects because most of the insectivorous plants grow in those area where there is deficiet of nitrogen in nutrients so they catch insect to fulfill its need of nutrients.
UnattemptedInsectivorous plants prey insects because most of the insectivorous plants grow in those area where there is deficiet of nitrogen in nutrients so they catch insect to fulfill its need of nutrients.
- Question 13 of 20
13. Question
Mon 863 is a variety of maize. It was in the news for the following reason. [2010]
CorrectMon 863 is genetically modified variety of maize, which is resistant of corn root worm.
IncorrectMon 863 is genetically modified variety of maize, which is resistant of corn root worm.
UnattemptedMon 863 is genetically modified variety of maize, which is resistant of corn root worm.
- Question 14 of 20
14. Question
Though coffee and tea both are cultivated on hill slopes, there is some difference between them regarding their cultivation. In this context, consider the following statements: [2010]
1. Coffee plant requires a hot and humid climate of tropical areas whereas tea can be cultivated in both tropical and subtropical areas.
2. Coffee is propagated by seeds but tea is propagated by stem cuttings only.
Which of the statements given above is/are correct?CorrectBoth tea and coffee is propagated by seeds and stem cutting, so the (2) option is wrong.
IncorrectBoth tea and coffee is propagated by seeds and stem cutting, so the (2) option is wrong.
UnattemptedBoth tea and coffee is propagated by seeds and stem cutting, so the (2) option is wrong.
- Question 15 of 20
15. Question
With reference to soil conservation, consider the following practices: [2010]
1. Crop rotation
2. Sand fences
3. Terracing
4. Wind breaks
Which of the above are considered appropriate methods for soil conservation in India.CorrectCrop rotation, Sand fences, terracing and wind breaks all are used for sand conservation in India. Sand fences is a simple and cheap method of inducing accretion of sands in arid and sandy areas.
IncorrectCrop rotation, Sand fences, terracing and wind breaks all are used for sand conservation in India. Sand fences is a simple and cheap method of inducing accretion of sands in arid and sandy areas.
UnattemptedCrop rotation, Sand fences, terracing and wind breaks all are used for sand conservation in India. Sand fences is a simple and cheap method of inducing accretion of sands in arid and sandy areas.
- Question 16 of 20
16. Question
Other than Jatropha curcas, why is Pongamia pinnata also considered a good option for the production of biodiesel in India? [2010]
1. Pongamia pinnata grows naturally in most of the arid regions of India.
2. The seeds of Pongamia pinnata are rich in lipid content of which nearly half is oleic acid.
Which of the statements given above is/are correct?CorrectPongamia Pinnata is adaptable to arid zones, and has a varied habitat distribution and able to grown in a variety of soils, it is native to humid and subtropical environment and grows naturally along coasts and river banks of India and Myanmar. It is nitrogen-fixing trees.
IncorrectPongamia Pinnata is adaptable to arid zones, and has a varied habitat distribution and able to grown in a variety of soils, it is native to humid and subtropical environment and grows naturally along coasts and river banks of India and Myanmar. It is nitrogen-fixing trees.
UnattemptedPongamia Pinnata is adaptable to arid zones, and has a varied habitat distribution and able to grown in a variety of soils, it is native to humid and subtropical environment and grows naturally along coasts and river banks of India and Myanmar. It is nitrogen-fixing trees.
- Question 17 of 20
17. Question
When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because? [2011]
CorrectPhloem layer of tissue just below the bark is responsible for carrying food from leave to roots.
IncorrectPhloem layer of tissue just below the bark is responsible for carrying food from leave to roots.
UnattemptedPhloem layer of tissue just below the bark is responsible for carrying food from leave to roots.
- Question 18 of 20
18. Question
Other than resistance to pests, what are the prospects for which genetically engineered plants have been created? [2012]
1. To enable them to withstand drought
2. To increase the nutritive value of the produce
3. To enable them to grow and do photosynthesis in spaceships and space stations
4. To increase their shelf life
Select the correct answer using the codes given below:CorrectExcept 3rd, all the statements are correct.
IncorrectExcept 3rd, all the statements are correct.
UnattemptedExcept 3rd, all the statements are correct.
- Question 19 of 20
19. Question
Consider the following kinds of organisms: [2012]
1. Bacteria
2. Fungi
3. Flowering plants
Some species of which of the above kinds of organisms are employed as biopesticides?CorrectAll of them are employed as Biopesticides.
IncorrectAll of them are employed as Biopesticides.
UnattemptedAll of them are employed as Biopesticides.
- Question 20 of 20
20. Question
Consider the following organisms: [2013]
1. Agaricus
2. Nostoc
3. Spirogyra
Which of the above is/are used as biofertilizer/biofertilizers?CorrectNostoc fix atmospheric nitrogen and are used as inoculations for paddy crop.
IncorrectNostoc fix atmospheric nitrogen and are used as inoculations for paddy crop.
UnattemptedNostoc fix atmospheric nitrogen and are used as inoculations for paddy crop.