727 + Interview Questions in GENERAL QA IN NEET Page 7 InterviewSolution

301.	If mass-energy equivalence is taken into account, when water is cooled to form ice, the mass of water should(a) Increase(b) remains unchanged(c) decrease(d) first increase then decrease
Answer» Correct Option (a) Increase Explanation : According to the mass-energy equivalence, mass and energy remain conserved. So, when water is cooled to form ice, water loses its energy so, change in energy increases the mass of water.

301.

If mass-energy equivalence is taken into account, when water is cooled to form ice, the mass of water should(a) Increase(b) remains unchanged(c) decrease(d) first increase then decrease

Answer»

Correct Option (a) Increase

Explanation :

According to the mass-energy equivalence, mass and energy remain conserved. So, when water is cooled to form ice, water loses its energy so, change in energy increases the mass of water.

Discussion

302.	The spring constant of a spring K, when it is divided into n equal parts, then the spring constant of one piece is (a) K/n (b) nK (c) nK/(n+1) (d) (n+1)K/n
Answer» Correct Option (b) nK Explanation : When a spring is cut into n equal parts, the spring constant k of each part is given by 1/K = 1/K+1/K+1/K+.......n terms = n/K k = nK - k is spring cosntant of one small pieces -K is spring constant of original

302.

The spring constant of a spring K, when it is divided into n equal parts, then the spring constant of one piece is (a) K/n (b) nK (c) nK/(n+1) (d) (n+1)K/n

Answer»

Correct Option (b) nK

Explanation :

When a spring is cut into n equal parts, the spring constant k of each part is given by

1/K = 1/K+1/K+1/K+.......n terms = n/K

k = nK

- k is spring cosntant of one small pieces

-K is spring constant of original

Discussion

303.	In which part of nephron, reabsorption of glucose is maximum from filtrate :–(a) Henle's loop(b) Proximal convoluted tubule(c) Distal convoluted tubule(d) Collecting duct
Answer» Correct Option (b) Proximal convoluted tubule

Discussion

304.	Polymerase chain react ion is most useful in :–(a) DNA synthesis(b) DNA amplification(c) Protein synthesis(d) Amino acid synthesis
Answer» Correct Option (b) DNA amplification

Discussion

305.	What will happen if the secretion of pariental cells of gastric glands is blocked with an inhibitor :– [a] in the absence of HCl secretion, inactive pepsinogen is not converted int othe active enzyme pepsin [b] enterokinase will not be released from the duodenal mucosa and so trypsinogen is not caonverted to trypsin [c] gastric juice will be deficient in chymosin [d] gastric juice will be deficient in pepsinogen
Answer» Correct option [a] in the absence of HCl secretion, inactive pepsinogen is not converted int othe active enzyme pepsin

305.

What will happen if the secretion of pariental cells of gastric glands is blocked with an inhibitor :– [a] in the absence of HCl secretion, inactive pepsinogen is not converted int othe active enzyme pepsin [b] enterokinase will not be released from the duodenal mucosa and so trypsinogen is not caonverted to trypsin [c] gastric juice will be deficient in chymosin [d] gastric juice will be deficient in pepsinogen

Answer»

Correct option [a] in the absence of HCl secretion, inactive pepsinogen is not converted int othe active enzyme pepsin

Discussion

306.	Which one is the most acidic compound ?
Answer» (3) Electron withdrawing – NO₂group has very strong –I and –R effects so, compound 3 will be most acidic.

Discussion

307.	Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field ?(1) K (2) Rb (3) Li (4) Na
Answer» (3) Li+ being smallest, has maximum charge density. Li⁺ is most heavily hydrated among all alkali metal ions. Effective size of Li⁺ in aqueous solution is therefore, largest. So, moves aslowest under electric field.

Discussion

308.	The most suitable method of separation of 1 : 1 mixture of ortho and para-nitrophenols is :(1) Chromatography (2) Crystallisation(3) Steam distillation (4) Sublimation
Answer» (3) Steam distillation is the most suitable method of separation of 1 : 1 mixture of ortho and para nitrophenols as there is intramolecular hydrogen bonding in o-nitrophenol.

Discussion

309.	Niche is(1) all the biological factors in the organism environment(2) the physical space where an organism live(3) the range of temperature that the organism needs to live(4) the functional role played by the organism where it lives
Answer» The correct option is(4) the functional role played by the organism where it lives Explanation: Niche is an ecological component of habitat which is delimited by functioning of an organism. A species may live in more than one niche in different stages of its life cycle.

309.

Niche is(1) all the biological factors in the organism environment(2) the physical space where an organism live(3) the range of temperature that the organism needs to live(4) the functional role played by the organism where it lives

Answer»

The correct option is(4) the functional role played by the organism where it lives

Explanation:

Niche is an ecological component of habitat which is delimited by functioning of an organism. A species may live in more than one niche in different stages of its life cycle.

Discussion

310.	In F2 generation 9 : 7 ratio is obtained in case of :–[a] complementary genes[b] pleiotropic genes[c] supplementary genes[d] revessive epistasis
Answer» Correct option [a] complementary genes

310.

In F2 generation 9 : 7 ratio is obtained in case of :–[a] complementary genes[b] pleiotropic genes[c] supplementary genes[d] revessive epistasis

Answer»

Correct option [a] complementary genes

Discussion

311.	Role of nitrifying bacteria, in nitrogen cycle, is to :–(a) Convert ammonia into nitrates(b) Fix atmospheric nitrogen(c) Convert ammonia into nitrogen(d) Convert amino acids into ammonia
Answer» Correct Option (a) Convert ammonia into nitrates

Discussion

312.	A 5×10-5 M base is diluted 100times . The ph of diluted base is A) between 7 and 8B) between 6 and 7C) between 5 and 6D) between 10 and11
Answer» The pH of the diluted base will always be between 7 and 8. The first thing to remember that after dilution the nature of acid doesn't change. If it is acid then it will remain that and same for the base. Here, Initial OH^- ion concentration = 5 x 10^-5M = n/v [where n and v number of moles and volume respectively denotes molarity] After the initial solution is diluted, its volume will be 100 ⋅ V. after dilution it will be 5 x 10^-7M then p[OH] will be less than 7. thus its pH will be slightly more than 7.

312.

A 5×10-5 M base is diluted 100times . The ph of diluted base is A) between 7 and 8B) between 6 and 7C) between 5 and 6D) between 10 and11

Answer»

The pH of the diluted base will always be between 7 and 8.

The first thing to remember that after dilution the nature of acid doesn't change. If it is acid then it will remain that and same for the base.

Here, Initial OH^- ion concentration = 5 x 10^-5M = n/v

[where n and v number of moles and volume respectively denotes molarity]
After the initial solution is diluted, its volume will be 100 ⋅ V.

after dilution it will be 5 x 10^-7M then p[OH] will be less than 7.

thus its pH will be slightly more than 7.

Discussion

313.	A new variety of rice was patented by a foreign company though such varieties have been present in India for a long time. This is related to (1) Co-667(2) Sharbati Sonora(3) Lerma Rojo(4) Basmati
Answer» Correct Option(4) Basmati Explanation: ln 1997, an American company got patent right on Basmati rice through the US Patent and Trademark Office. This 'new' variety of Basmati had actually been derived from Indian farmer's varieties. This 'new' variety was produced by crossing Indian Basmati with semi-dwarf varieties. Lerma Rojo and Sharbati Sonora are high yielding varieties of wheat. Co-667 is a variety of soybean.

313.

A new variety of rice was patented by a foreign company though such varieties have been present in India for a long time. This is related to (1) Co-667(2) Sharbati Sonora(3) Lerma Rojo(4) Basmati

Answer»

Correct Option(4) Basmati

Explanation:

ln 1997, an American company got patent right on Basmati rice through the US Patent and Trademark Office. This 'new' variety of Basmati had actually been derived from Indian farmer's varieties. This 'new' variety was produced by crossing Indian Basmati with semi-dwarf varieties.

Lerma Rojo and Sharbati Sonora are high yielding varieties of wheat. Co-667 is a variety of soybean.

Discussion

314.	A good exapme of an auxin herbicide is : –(a) IAA (b) 2,4-D (c) NAA (d) IBA
Answer» Correct Option (b) 2,4-D

Discussion

315.	Cellulose is a :– [a] heteroglycan pentosan [b] heteroglycan hexosan [c] homoglycan pentosan [d] homoglycan hexosan
Answer» Correct option [d] homoglycan hexosan

315.

Cellulose is a :– [a] heteroglycan pentosan [b] heteroglycan hexosan [c] homoglycan pentosan [d] homoglycan hexosan

Answer»

Correct option [d] homoglycan hexosan

Discussion

316.	Areolar connective tissue joins :–(a) bones with bones(b) fat body with muscles(c) integument with muscles(d) bones with muscles
Answer» Correct Option (c) integument with muscles

Discussion

317.	Which of the following acid is present abundantly in apple :–[a] Citric acid [b] Malic acid[c] Aspartic acid [d] Fumaric acid
Answer» Correct option [b] Malic acid

317.

Which of the following acid is present abundantly in apple :–[a] Citric acid [b] Malic acid[c] Aspartic acid [d] Fumaric acid

Answer»

Correct option [b] Malic acid

Discussion

318.	In a plant that is facing physiological stress, the hormone found in abundance will be :–[a] gibberellin [b] auxin[c] ABA [d] ethylene
Answer» Correct option [c] ABA

318.

In a plant that is facing physiological stress, the hormone found in abundance will be :–[a] gibberellin [b] auxin[c] ABA [d] ethylene

Answer»

Correct option [c] ABA

Discussion

319.	P700 is named because :–(a) it is 700 times more efficient than other pigment molecules(b) its absorption and action spectra show peaks at 700 nm(c) it is rendered ineffective at wave length above 700 nm(d) it is a unit consisting of 700 chlorophyll molecules
Answer» Correct option (b) its absorption and action spectra show peaks at 700 nm

Discussion

320.	Largest muscles of the body is :–(a) stapedius (b) gluteus maximus(c) quadriceps (d) gastrocnemius
Answer» Correct option(b) gluteus maximus

Discussion

321.	During transition of last seral community to climax community which of the following does not occur :– [a] Increased species diversity [b] Increased soil fertillity [c] Increased invasion of species [d] Increased niche specialization
Answer» Correct option [c] Increased invasion of species

321.

During transition of last seral community to climax community which of the following does not occur :– [a] Increased species diversity [b] Increased soil fertillity [c] Increased invasion of species [d] Increased niche specialization

Answer»

Correct option [c] Increased invasion of species

Discussion

322.	Which of the following plant kingdom is called 'amphibians' :–(a) Bryophyta (b) Pterdophyta(c) Trachemophyta (d) Thallophyta
Answer» Correct option (a) Bryophyta

Discussion

323.	The instantaneous value of current in a ac.circuit is I=2sin (100pie t + pie/3)A. The current will be maximum for the first time at a) 1/100sec b)1/600sec c) 1/200 sec
Answer» From the given equation of sine function the current will be maximum when 100piet+pie/3=pie/2 as sin (pie/2)=1 is the maximum value of sign function. So t= 1/100(1/2-1/3)=1/600 sec Hence option (b) is correct

Discussion

324.	When a positive charge particle is moving on a equipotential surface, then work done in this process will be(a) positive(b) negative(c) zero(d) None of these
Answer» Answer is : (c) zero Work done on equipotential surface is zero because potential difference is zero.

324.

When a positive charge particle is moving on a equipotential surface, then work done in this process will be(a) positive(b) negative(c) zero(d) None of these

Answer»

Answer is : (c) zero

Work done on equipotential surface is zero because potential difference is zero.

Discussion

325.	The smallest taxon is called :–(a) class (b) order(c) genus (d) species
Answer» Correct Option (d) species

325.

The smallest taxon is called :–(a) class (b) order(c) genus (d) species

Answer»

Correct Option (d) species

Discussion

326.	Colostrum provides the infant with :–(a) auto immunity(b) passive immunity(c) active immunity(d) innate immunity
Answer» Correct Option (b) passive immunity

Discussion

327.	Chromosomes having sub-terminal centromere capped by telomere is called :–[a] metacentric [b] sumetacentric[c] acrocentric [d] telocentric
Answer» Correct option [c] acrocentric

327.

Chromosomes having sub-terminal centromere capped by telomere is called :–[a] metacentric [b] sumetacentric[c] acrocentric [d] telocentric

Answer»

Correct option [c] acrocentric

Discussion

328.	In tissue culture, addition of which of the following susbstance promotes the growth of buds :– (a) Colchicine (b) Urea (c) Auxins (d) Cytokinin
Answer» Correct Option (d) Cytokinin

Discussion

329.	Phallic organs in cockroach are related to :–(a) male excretory system(b) male reproductive system(c) female excretory system(d) female reproductive system
Answer» Correct Option (b) male reproductive system

Discussion

330.	The carbon dioxide acceptor in CAM plants is :–[a] malic acid[b] oxaloacetic acid[c] pyruvic acid[d] phosphoenol pyruvic acid
Answer» Correct option [d] phosphoenol pyruvic acid

330.

The carbon dioxide acceptor in CAM plants is :–[a] malic acid[b] oxaloacetic acid[c] pyruvic acid[d] phosphoenol pyruvic acid

Answer»

Correct option [d] phosphoenol pyruvic acid

Discussion

331.	The term granum refers to :–[a] stack of thylakoids in plastids of higher plants[b] a constant in quantum equation[c] glycolysis of glucose[d] by-product of photosynthesis
Answer» Correct option [a] stack of thylakoids in plastids of higher plants

331.

The term granum refers to :–[a] stack of thylakoids in plastids of higher plants[b] a constant in quantum equation[c] glycolysis of glucose[d] by-product of photosynthesis

Answer»

Correct option [a] stack of thylakoids in plastids of higher plants

Discussion

332.	Monera does not include :–(a) Bacteria (b) Cyanobacteria(c) Crahebacteria (d) Slime moulds
Answer» Correct Option (d) Slime moulds

Discussion

333.	Vernalization occurs in response to :–[a] high light intensity [b] low temperature[c] high temperature [d] low light intensity
Answer» Correct option [b] low temperature

333.

Vernalization occurs in response to :–[a] high light intensity [b] low temperature[c] high temperature [d] low light intensity

Answer»

Correct option [b] low temperature

Discussion

334.	Floral formula for liliaceae is :–
Answer» Correct option (a)

334.

Floral formula for liliaceae is :–

Answer»

Correct option (a)

Discussion

335.	The equation of respiration is :–(a) C6H12O6 + 6O2 → 6CO2+6H2O+686 Kcal(b) C6H12O6+2CO2→ 6CO2+6H2O+686Kcal(c) C6H12O6+6CO2 →6CO2+6H2O+680Kcal(d) C6H12O6+6CO2→12CO2+6H2O+686Kcal
Answer» Correct Option (a) C₆H₁₂O₆+ 6O₂ → 6CO₂+6H₂O+686 Kcal

Discussion

336.	Fragrant flowers with well-developed nectaries are adapted for :–(a) Entomophily (b) Hydrophily(c) Anemophily (d) zoophily
Answer» Correct Option (a) Entomophily

Discussion

337.	Trylotriton (Indian salamander) is a/an :–[a] reptile [b] amphibian[c] fish [d] none of these
Answer» Correct option [b] amphibian

337.

Trylotriton (Indian salamander) is a/an :–[a] reptile [b] amphibian[c] fish [d] none of these

Answer»

Correct option [b] amphibian

Discussion

338.	Pigment that absorbs red & far red light in plants is :[a] phytochrome [b] carotene[c] xanthophyll [d] cytochrome
Answer» Correct option [a] phytochrome

338.

Pigment that absorbs red & far red light in plants is :[a] phytochrome [b] carotene[c] xanthophyll [d] cytochrome

Answer»

Correct option [a] phytochrome

Discussion

339.	Loose smut of wheat is caused by :–[a] Puccinia [b] Ustilago[c] Albugo [d] Phytophthora
Answer» Correct option [b] Ustilago

339.

Loose smut of wheat is caused by :–[a] Puccinia [b] Ustilago[c] Albugo [d] Phytophthora

Answer»

Correct option [b] Ustilago

Discussion

340.	Which marlarial parast ie has the longest incubation period :–(a) Plasmodium vivax(b) Plasmodium ovale(c) Plasmodium falciparum(d) Plasmodium malariae
Answer» Correct Option (d) Plasmodium malariae

Discussion

341.	Turner's syndrome has _________ chromosome compliment :–(a) XXY (b) XXX (c) XO (d) XYY
Answer» Correct Option (c) XO

Discussion

342.	Which of the following is not an epidernal structure :–[a] cuticle [b] Bullifrom cells[c] Root hair [d] subsidiary cells
Answer» Correct option [a] cuticle

342.

Which of the following is not an epidernal structure :–[a] cuticle [b] Bullifrom cells[c] Root hair [d] subsidiary cells

Answer»

Correct option [a] cuticle

Discussion

343.	Acetylcholinesterase enzyme splits acetylcholine into :–(a) Acetone and choline(b) Acetic acid and choline(c) Aspartic acid and acetylcholine(d) Amino acid and choline
Answer» Correct Option (b) Acetic acid and choline

343.

Acetylcholinesterase enzyme splits acetylcholine into :–(a) Acetone and choline(b) Acetic acid and choline(c) Aspartic acid and acetylcholine(d) Amino acid and choline

Answer»

Correct Option (b) Acetic acid and choline

Discussion

344.	Principal quantum number defines the principal shell in which electron is revolving around the nucleus and Azimuthal quantum number describes the name of subshell and the shape of orbitals. The value s of the principal and Azimuthal quantum number for 23rd electron present in iron atom are :(a) 3 and 2 (b) 3 and 1(c) 4 and 1 (d) 4 and 0
Answer» Correct Option (a) 3 and 2 Explanation: Electronic configuration of Fe is [AR] 4s²3d⁶The 23rd electron will enter in 3d subshell Hence, value of n for 3d = 3 value of l for 3d = 2

344.

Principal quantum number defines the principal shell in which electron is revolving around the nucleus and Azimuthal quantum number describes the name of subshell and the shape of orbitals. The value s of the principal and Azimuthal quantum number for 23rd electron present in iron atom are :(a) 3 and 2 (b) 3 and 1(c) 4 and 1 (d) 4 and 0

Answer»

Correct Option (a) 3 and 2

Explanation:

Electronic configuration of Fe is [AR] 4s²3d⁶The 23rd electron will enter in 3d subshell

Hence, value of n for 3d = 3

value of l for 3d = 2

Discussion

345.	Choose the process involved in the separation of ortho and para nitrophenol and the reason behind respectively (a) steam distillation, metallic bonding (b) sublimation, Hydrogen bonding (c) steam distillation, van der Waal's forces (d) steam distillation, Hydrogen bonding
Answer» Correct option (d) steam distillation, Hydrogen bonding Explanation: o-nitrophenol is steam volatile due to intramolecular hydrogen bonding while p-nitrophenol is less volatile due to inter molecular H-bonding hence they can be separated by steam distillation only.

345.

Choose the process involved in the separation of ortho and para nitrophenol and the reason behind respectively (a) steam distillation, metallic bonding (b) sublimation, Hydrogen bonding (c) steam distillation, van der Waal's forces (d) steam distillation, Hydrogen bonding

Answer»

Correct option (d) steam distillation, Hydrogen bonding

Explanation:

o-nitrophenol is steam volatile due to intramolecular hydrogen bonding while p-nitrophenol is less volatile due to inter molecular H-bonding hence they can be separated by steam distillation only.

Discussion

346.	The number of spectral lines that can be possible when electrons in 7th shell in different hydrogen atoms return to ten second shell is : (a) 12 (b) 15 (c) 14 (d) 10
Answer» Correct Option (b) 15 Explanation: Number of spectral lines = (n₂-n₁)(n₂-n_1-n₁+1)/2 = (7-2)(7-2+1)/2 = 5 x 6/2 = 15

346.

The number of spectral lines that can be possible when electrons in 7th shell in different hydrogen atoms return to ten second shell is : (a) 12 (b) 15 (c) 14 (d) 10

Answer»

Correct Option (b) 15

Explanation:

Number of spectral lines = (n₂-n₁)(n₂-n_1-n₁+1)/2

= (7-2)(7-2+1)/2

= 5 x 6/2 = 15

Discussion

347.	Which one of the following is correct order ?(a) —OH > —OR (order of –I effect)(b) —CH3 > —CO3 > CCl3 (order of +I effect)(c) —F > —OH > —NH2 (order of –I effect)(d) —NO — SO2R—SO3H—NO2 (set of meta directors)
Answer» Correct option (c) —F > —OH > —NH₂ (order of –I effect) Explanation: Problem is based on concept of inductive effect and electronegativity of element. As F is most electronegative element with smallest size rather than —OH and —NH₂ where O and N has larger size as well as lower electronegative than F. —F —OH —NH₂ Electronegativity decreases → inductive effect decreases → Hence, correct order is (c) While all other are conceptually very wrong

347.

Which one of the following is correct order ?(a) —OH > —OR (order of –I effect)(b) —CH3 > —CO3 > CCl3 (order of +I effect)(c) —F > —OH > —NH2 (order of –I effect)(d) —NO — SO2R—SO3H—NO2 (set of meta directors)

Answer»

Correct option (c) —F > —OH > —NH₂ (order of –I effect)

Explanation:

Problem is based on concept of inductive effect and electronegativity of element. As F is most electronegative element with smallest size rather than —OH and —NH₂ where O and N has larger size as well as lower electronegative than F.

—F —OH —NH₂

Electronegativity decreases

→ inductive effect decreases

→ Hence, correct order is (c)

While all other are conceptually very wrong

Discussion

348.	An artificial satellite moving in a circular orbit around the earth has a total (kinetic + potential) energy E0. Its potential energy is(a) –E0 (b) 15E0 (c) 2E0 (d) E0
Answer» Correct Option (c) 2E₀ Explanation : For a satellite, we have Kinetic energy = GmM/2r Potential energy = -GmM/r Total energy E₀ = KE + PE = GmMr/2r - GmM/r = GmM/2r = PE/2 or PE = 2E₀

348.

An artificial satellite moving in a circular orbit around the earth has a total (kinetic + potential) energy E0. Its potential energy is(a) –E0 (b) 15E0 (c) 2E0 (d) E0

Answer»

Correct Option (c) 2E₀

Explanation :

For a satellite, we have

Kinetic energy = GmM/2r

Potential energy = -GmM/r

Total energy E₀ = KE + PE

= GmMr/2r - GmM/r = GmM/2r = PE/2

or PE = 2E₀

Discussion

349.	Which of the following is not the cause of low conductivity of electrolytes ? (a) high resistance offered by the solution to the motion of ions (b) ionisation of salt (c) low number of density of charge carries (d) low dridrt velocity of ions
Answer» Correct option (b) ionisation of salt Explanation: Low conductivity is due to low drift velocity of ions, high resistance offered by the solution to the motion of ions and low number of density of charge carriers.

349.

Which of the following is not the cause of low conductivity of electrolytes ? (a) high resistance offered by the solution to the motion of ions (b) ionisation of salt (c) low number of density of charge carries (d) low dridrt velocity of ions

Answer»

Correct option (b) ionisation of salt

Explanation:

Low conductivity is due to low drift velocity of ions, high resistance offered by the solution to the motion of ions and low number of density of charge carriers.

Discussion

350.	Pick out which one of these is for AND, NAND and NOT gates, respectively :(a) III, II and I (b) III, II and IV(c) II, III and IV (d) II, IV and III
Answer» Correct option (d) II, IV and III Explanation: Symbols in questions are as follows I. OR gate II. AND gate III. NOT gate IV. NAND gate

350.

Pick out which one of these is for AND, NAND and NOT gates, respectively :(a) III, II and I (b) III, II and IV(c) II, III and IV (d) II, IV and III

Answer»

Correct option (d) II, IV and III

Explanation:

Symbols in questions are as follows

I. OR gate

II. AND gate

III. NOT gate

IV. NAND gate

Discussion

Explore topic-wise InterviewSolutions in .

If mass-energy equivalence is taken into account, when water is cooled to form ice, the mass of water should(a) Increase(b) remains unchanged(c) decrease(d) first increase then decrease

The spring constant of a spring K, when it is divided into n equal parts, then the spring constant of one piece is (a) K/n (b) nK (c) nK/(n+1) (d) (n+1)K/n

In which part of nephron, reabsorption of glucose is maximum from filtrate :–(a) Henle's loop(b) Proximal convoluted tubule(c) Distal convoluted tubule(d) Collecting duct

Polymerase chain react ion is most useful in :–(a) DNA synthesis(b) DNA amplification(c) Protein synthesis(d) Amino acid synthesis

Which one is the most acidic compound ?

Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field ?(1) K (2) Rb (3) Li (4) Na

The most suitable method of separation of 1 : 1 mixture of ortho and para-nitrophenols is :(1) Chromatography (2) Crystallisation(3) Steam distillation (4) Sublimation

Niche is(1) all the biological factors in the organism environment(2) the physical space where an organism live(3) the range of temperature that the organism needs to live(4) the functional role played by the organism where it lives

In F2 generation 9 : 7 ratio is obtained in case of :–[a] complementary genes[b] pleiotropic genes[c] supplementary genes[d] revessive epistasis

Role of nitrifying bacteria, in nitrogen cycle, is to :–(a) Convert ammonia into nitrates(b) Fix atmospheric nitrogen(c) Convert ammonia into nitrogen(d) Convert amino acids into ammonia

A 5×10-5 M base is diluted 100times . The ph of diluted base is A) between 7 and 8B) between 6 and 7C) between 5 and 6D) between 10 and11

A new variety of rice was patented by a foreign company though such varieties have been present in India for a long time. This is related to (1) Co-667(2) Sharbati Sonora(3) Lerma Rojo(4) Basmati

A good exapme of an auxin herbicide is : –(a) IAA (b) 2,4-D (c) NAA (d) IBA

Cellulose is a :– [a] heteroglycan pentosan [b] heteroglycan hexosan [c] homoglycan pentosan [d] homoglycan hexosan

Areolar connective tissue joins :–(a) bones with bones(b) fat body with muscles(c) integument with muscles(d) bones with muscles

Which of the following acid is present abundantly in apple :–[a] Citric acid [b] Malic acid[c] Aspartic acid [d] Fumaric acid

In a plant that is facing physiological stress, the hormone found in abundance will be :–[a] gibberellin [b] auxin[c] ABA [d] ethylene

P700 is named because :–(a) it is 700 times more efficient than other pigment molecules(b) its absorption and action spectra show peaks at 700 nm(c) it is rendered ineffective at wave length above 700 nm(d) it is a unit consisting of 700 chlorophyll molecules

Largest muscles of the body is :–(a) stapedius (b) gluteus maximus(c) quadriceps (d) gastrocnemius

During transition of last seral community to climax community which of the following does not occur :– [a] Increased species diversity [b] Increased soil fertillity [c] Increased invasion of species [d] Increased niche specialization

Which of the following plant kingdom is called 'amphibians' :–(a) Bryophyta (b) Pterdophyta(c) Trachemophyta (d) Thallophyta

The instantaneous value of current in a ac.circuit is I=2sin (100pie t + pie/3)A. The current will be maximum for the first time at a) 1/100sec b)1/600sec c) 1/200 sec

When a positive charge particle is moving on a equipotential surface, then work done in this process will be(a) positive(b) negative(c) zero(d) None of these

The smallest taxon is called :–(a) class (b) order(c) genus (d) species

Colostrum provides the infant with :–(a) auto immunity(b) passive immunity(c) active immunity(d) innate immunity

Chromosomes having sub-terminal centromere capped by telomere is called :–[a] metacentric [b] sumetacentric[c] acrocentric [d] telocentric

In tissue culture, addition of which of the following susbstance promotes the growth of buds :– (a) Colchicine (b) Urea (c) Auxins (d) Cytokinin

Phallic organs in cockroach are related to :–(a) male excretory system(b) male reproductive system(c) female excretory system(d) female reproductive system

The carbon dioxide acceptor in CAM plants is :–[a] malic acid[b] oxaloacetic acid[c] pyruvic acid[d] phosphoenol pyruvic acid

The term granum refers to :–[a] stack of thylakoids in plastids of higher plants[b] a constant in quantum equation[c] glycolysis of glucose[d] by-product of photosynthesis

Monera does not include :–(a) Bacteria (b) Cyanobacteria(c) Crahebacteria (d) Slime moulds

Vernalization occurs in response to :–[a] high light intensity [b] low temperature[c] high temperature [d] low light intensity

Floral formula for liliaceae is :–

The equation of respiration is :–(a) C6H12O6 + 6O2 → 6CO2+6H2O+686 Kcal(b) C6H12O6+2CO2→ 6CO2+6H2O+686Kcal(c) C6H12O6+6CO2 →6CO2+6H2O+680Kcal(d) C6H12O6+6CO2→12CO2+6H2O+686Kcal

Fragrant flowers with well-developed nectaries are adapted for :–(a) Entomophily (b) Hydrophily(c) Anemophily (d) zoophily

Trylotriton (Indian salamander) is a/an :–[a] reptile [b] amphibian[c] fish [d] none of these

Pigment that absorbs red &amp; far red light in plants is :[a] phytochrome [b] carotene[c] xanthophyll [d] cytochrome

Loose smut of wheat is caused by :–[a] Puccinia [b] Ustilago[c] Albugo [d] Phytophthora

Which marlarial parast ie has the longest incubation period :–(a) Plasmodium vivax(b) Plasmodium ovale(c) Plasmodium falciparum(d) Plasmodium malariae

Turner's syndrome has _________ chromosome compliment :–(a) XXY (b) XXX (c) XO (d) XYY

Which of the following is not an epidernal structure :–[a] cuticle [b] Bullifrom cells[c] Root hair [d] subsidiary cells

Acetylcholinesterase enzyme splits acetylcholine into :–(a) Acetone and choline(b) Acetic acid and choline(c) Aspartic acid and acetylcholine(d) Amino acid and choline

Choose the process involved in the separation of ortho and para nitrophenol and the reason behind respectively (a) steam distillation, metallic bonding (b) sublimation, Hydrogen bonding (c) steam distillation, van der Waal's forces (d) steam distillation, Hydrogen bonding

The number of spectral lines that can be possible when electrons in 7th shell in different hydrogen atoms return to ten second shell is : (a) 12 (b) 15 (c) 14 (d) 10

Which one of the following is correct order ?(a) —OH &gt; —OR (order of –I effect)(b) —CH3 &gt; —CO3 &gt; CCl3 (order of +I effect)(c) —F &gt; —OH &gt; —NH2 (order of –I effect)(d) —NO — SO2R—SO3H—NO2 (set of meta directors)

An artificial satellite moving in a circular orbit around the earth has a total (kinetic + potential) energy E0. Its potential energy is(a) –E0 (b) 15E0 (c) 2E0 (d) E0

Which of the following is not the cause of low conductivity of electrolytes ? (a) high resistance offered by the solution to the motion of ions (b) ionisation of salt (c) low number of density of charge carries (d) low dridrt velocity of ions

Pick out which one of these is for AND, NAND and NOT gates, respectively :(a) III, II and I (b) III, II and IV(c) II, III and IV (d) II, IV and III

Pigment that absorbs red & far red light in plants is :[a] phytochrome [b] carotene[c] xanthophyll [d] cytochrome

Which one of the following is correct order ?(a) —OH > —OR (order of –I effect)(b) —CH3 > —CO3 > CCl3 (order of +I effect)(c) —F > —OH > —NH2 (order of –I effect)(d) —NO — SO2R—SO3H—NO2 (set of meta directors)