NEET
How many stereoisomerism does this molecule have CH3-CH=CH-CH2-CHBr-CH3?
Prachi Singh answered • 19 minutes agoTheir are 4 stereo isomres in this compound 2 geometrical isomers and 2 optical isomers
Aditi asked • 2 minutes agoThe sequence of the 5’ and 3’ primers for the following DNA sequence will be:
5’ AATGCGGCAATCGAGTC3’
3’ TTACGCCGTTAGCTCCAG5’- a)5’ TTACG 3’, 5’ CTGAG 3’
- b)5’ AATGC 3’, 5’ TTACG 3’
- c)5’ AATGC 3’, 5’ GACTC 3’
- d)5’ AGTC 3’ , 5’ TCAG 3’
Correct answer is option 'C'. Can you explain this answer?
The sequence of the 5’ and 3’ primers for the following DNA sequence will be:
5’ AATGCGGCAATCGAGTC3’
3’ TTACGCCGTTAGCTCCAG5’
5’ AATGCGGCAATCGAGTC3’
3’ TTACGCCGTTAGCTCCAG5’
a)
5’ TTACG 3’, 5’ CTGAG 3’
b)
5’ AATGC 3’, 5’ TTACG 3’
c)
5’ AATGC 3’, 5’ GACTC 3’
d)
5’ AGTC 3’ , 5’ TCAG 3’
Consider the reaction 
The approximate volume of chlorine that would react with 324 g of aluminium at stp is - a)121 L
- b)134 L
- c) 260 L
- d)403 L
Correct answer is option 'D'. Can you explain this answer?
The approximate volume of chlorine that would react with 324 g of aluminium at stp is a)
121 L
b)
134 L
c)
260 L
d)
403 L
User Left . answered • 32 minutes ago324/9 =36 gm eqv
Cl2 =36 gm eqv
vol of Cl2 =36 *11.2=403 L
Cl2 =36 gm eqv
vol of Cl2 =36 *11.2=403 L
Bharati Malhdtra asked • 33 minutes agoIn the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R). Read the statements carefully, and mark the correct answer.
Assertion(A): Secreting hypotonic urine is effective in reducing urinary loss of water.
Reason(R): Hypotonic urine is more concentrated and higher in osmotic pressure than the blood.- a)Both assertion and reason are true and reason is the correct explanation of assertion.
- b)Both assertion and reason are true but reason is not the correct explanation of assertion.
- c)Assertion is true but reason is false.
- d)Both assertion and reason are false.
Correct answer is option 'D'. Can you explain this answer?
In the following question, a statement of Assertion(A) is given followed by a corresponding statement of Reason(R). Read the statements carefully, and mark the correct answer.
Assertion(A): Secreting hypotonic urine is effective in reducing urinary loss of water.
Reason(R): Hypotonic urine is more concentrated and higher in osmotic pressure than the blood.
Assertion(A): Secreting hypotonic urine is effective in reducing urinary loss of water.
Reason(R): Hypotonic urine is more concentrated and higher in osmotic pressure than the blood.
a)
Both assertion and reason are true and reason is the correct explanation of assertion.
b)
Both assertion and reason are true but reason is not the correct explanation of assertion.
c)
Assertion is true but reason is false.
d)
Both assertion and reason are false.
Hemozoin is released into blood during the infection of Plasmodium vivax every___.- a)12 hrs
- b)72 hrs
- c)48 hrs
- d)24 hrs
Correct answer is option 'B'. Can you explain this answer?
Hemozoin is released into blood during the infection of Plasmodium vivax every___.
a)
12 hrs
b)
72 hrs
c)
48 hrs
d)
24 hrs
Arushi Thakur answered • 1 hour agoIf we talk about normal malaria then its most common symptom are bouts of fever in every 3 days which means that it releases its toxin after every three days hence ans. shoul be 72hrs.
Jit Ram asked • 47 minutes agoWhich of the following do sticky ends and nucleic acid probes have in common?- a)They both are used as gene vectors in genetic engineering.
- b)They both involve complementary base pairing.
- c)They both are parts of RNA molecules.
- d)They both are produced by the action of restriction enzymes.
Correct answer is option 'B'. Can you explain this answer?
Which of the following do sticky ends and nucleic acid probes have in common?
a)
They both are used as gene vectors in genetic engineering.
b)
They both involve complementary base pairing.
c)
They both are parts of RNA molecules.
d)
They both are produced by the action of restriction enzymes.
Expand international Union for conversation of nature?
Santunu Pradhan answered • 1 hour agoIUCN is a organization which works for the conservation of animals and plants. There are many categories. IUCN publishe Red Data book and now it is called WCU (world conservation union).
Which one of the following expanded forms of the followings acronyms is
correct?- a)IUCN = International Union for Conservation of Nature and Natural Resources
- b)IPCC = International Panel for Climate Change
- c)UNEP = United Nations Environmental Policy
- d)EPA = Environmental Pollution Agency
Correct answer is option 'A'. Can you explain this answer?
Which one of the following expanded forms of the followings acronyms is
correct?
correct?
a)
IUCN = International Union for Conservation of Nature and Natural Resources
b)
IPCC = International Panel for Climate Change
c)
UNEP = United Nations Environmental Policy
d)
EPA = Environmental Pollution Agency
Santunu Pradhan answered • 1 hour agoIUCN Is the answer
Which of the following is the strongest acid?- a)CF₃COOH
- b)CBr₃COOH
- c)CH₃COOH
- d)CCl₃COOH
Correct answer is option 'A'. Can you explain this answer?
Which of the following is the strongest acid?
a)
CF₃COOH
b)
CBr₃COOH
c)
CH₃COOH
d)
CCl₃COOH
Baby Ghosh answered • 2 hours agoAmong these compounds....CF3COOH is the most acidic because it has -I effect which means that CF3COOH is the most acidic in nature among theses compounds.So..option A is correct..
A radioactive sample at any instant has its disintegration rate 5000 disintegrations per minute. After 5 min, the rate is 1250 disintegrations per min. Then, the decay constant (per minute) is- a)0.4 ln 2
- b)0.2 ln 2
- c)0.1 ln 2
- d)0.8 ln 2
Correct answer is option 'A'. Can you explain this answer?
A radioactive sample at any instant has its disintegration rate 5000 disintegrations per minute. After 5 min, the rate is 1250 disintegrations per min. Then, the decay constant (per minute) is
a)
0.4 ln 2
b)
0.2 ln 2
c)
0.1 ln 2
d)
0.8 ln 2
Sanjana Singh answered • 2 hours ago
2 moles of N2 is mixed with 6 moles of H2 in a closed vessel of one litre capacity. If 50% N2 is converted into NH3 at equilibrium, the value of Kc for the reaction,
N2(g) + 3H2(g) ⇌ 2NH3(g) is- a)4/27
- b)27/4
- c)1/27
- d)27
Correct answer is option 'A'. Can you explain this answer?
2 moles of N2 is mixed with 6 moles of H2 in a closed vessel of one litre capacity. If 50% N2 is converted into NH3 at equilibrium, the value of Kc for the reaction,
N2(g) + 3H2(g) ⇌ 2NH3(g) is
N2(g) + 3H2(g) ⇌ 2NH3(g) is
a)
4/27
b)
27/4
c)
1/27
d)
27
Sanjana Singh answered • 2 hours ago
If s p mixing is not operative the what is correct for c2? B O =2 BO=3 Paramagnetic Diamagnetic?
User Left . answered • 2 hours agoBO--2= paramagnetic and BO ---3= diamagnetic
Nitin Yadav asked • 1 hour agoNo. of identical photons incident on a perfectly black body of mass m kept at rest on smooth horizontal surface. Then the acceleration of the body if n number of photons incident per second is (Assume wavelength of photon to be λ) :- a)
- b)
- c)
- d)
Correct answer is option 'A'. Can you explain this answer?
No. of identical photons incident on a perfectly black body of mass m kept at rest on smooth horizontal surface. Then the acceleration of the body if n number of photons incident per second is (Assume wavelength of photon to be λ) :
a)
b)
c)
d)
Arteries are best defined as the vessels which- a)Carry blood from one visceral organ to another visceral organ
- b)Supply oxygenated blood to the different organs
- c)Carry blood away from the heart to different organs
- d)Break up into capillaries which reunite to form a vein
Correct answer is option 'C'. Can you explain this answer?
Arteries are best defined as the vessels which
a)
Carry blood from one visceral organ to another visceral organ
b)
Supply oxygenated blood to the different organs
c)
Carry blood away from the heart to different organs
d)
Break up into capillaries which reunite to form a vein
Himaja Ammu answered • 2 hours agoYeah ...they always carry blood (whatever...oxygenated or deoxygenated) away from the heart ....
all arteries carry oxygenated blood whereas pulmonary artery carry deoxygenated blood to lungs for the purpose of purification
CHAUDHARI PARAS SURESHBHAI asked • 1 hour agoFor which of the following would you expect distribution range to be badly affected if average Global temperature keeps increasing:- a)Stenothermal species
- b)Euryhaline species
- c)Both Stenothermal species and Euryhaline species
- d)Eurythermal species
Correct answer is option 'A'. Can you explain this answer?
For which of the following would you expect distribution range to be badly affected if average Global temperature keeps increasing:
a)
Stenothermal species
b)
Euryhaline species
c)
Both Stenothermal species and Euryhaline species
d)
Eurythermal species
The value of TV is about 500 ml for an average adult human male but only some part of it enters lung alveoli and rest of it fills respiratory passage. What should be the distribution ratio for alveolar volume /respiratory passage volume:- a)2:3
- b)3:7
- c)1:1
- d)7:3
Correct answer is option 'D'. Can you explain this answer?
The value of TV is about 500 ml for an average adult human male but only some part of it enters lung alveoli and rest of it fills respiratory passage. What should be the distribution ratio for alveolar volume /respiratory passage volume:
a)
2:3
b)
3:7
c)
1:1
d)
7:3
User Left . answered • 2 hours ago350/150 =7:3
Rearing of fish is known as- (a)apiculture. (b)sericulture. (c)pisciculture. (d)moriculture?
Jananignanamurugan Janan answered • 2 hours agoPISCICULTURE-REARING OF FISHES....
apiculture-bee keeping......
sericulture-rearing of silk worms......
moriculture- mulberry cultivation......
Amrish Kumar Pandey A asked • 2 hours agoIn the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-Assertion(A): Propadiene is optically active.
Reason(R): Propadiene has a plane of symmetry.- a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.
- b)Both Assertion and Reason are true but Reason is not the correct explanation of assertion.
- c)Assertion is true but Reason is false.
- d)Both Assertion and Reason are false.
Correct answer is option 'D'. Can you explain this answer?
In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Propadiene is optically active.
Reason(R): Propadiene has a plane of symmetry.
Reason(R): Propadiene has a plane of symmetry.
a)
Both Assertion and Reason are true and Reason is the correct explanation of assertion.
b)
Both Assertion and Reason are true but Reason is not the correct explanation of assertion.
c)
Assertion is true but Reason is false.
d)
Both Assertion and Reason are false.
Which of the following is most acidic ?- a)
- b)
- c)
- d)
Correct answer is option 'A'. Can you explain this answer?
Which of the following is most acidic ?
a)
b)
c)
d)
Meenakshi Verma answered • 2 hours agoDueto resonance
Which of the following pair of factors are considered favourable for the formation of oxyhaemoglobin? low pCO2 & low temperature low pCO2 & low H+ concentration low H+ concentration & high pCO2 High H+ concentration & high pCO2 In the alveoli, where there is high pCO2 , low pCO2 , lesser H+ concentration and lower temperature, the factors are all favourable for the formation of oxyhaemoglobin.- a)low pO2 & low H+ concentration
- b)High H+ concentration & high pO2
- c)low H+ concentration & high pCO2
- d)low pCO2 & low temperature
Correct answer is option 'D'. Can you explain this answer?
Which of the following pair of factors are considered favourable for the formation of oxyhaemoglobin? low pCO2 & low temperature low pCO2 & low H+ concentration low H+ concentration & high pCO2 High H+ concentration & high pCO2 In the alveoli, where there is high pCO2 , low pCO2 , lesser H+ concentration and lower temperature, the factors are all favourable for the formation of oxyhaemoglobin.
a)
low pO2 & low H+ concentration
b)
High H+ concentration & high pO2
c)
low H+ concentration & high pCO2
d)
low pCO2 & low temperature
Manjit Gupta answered • 2 hours agoAcc to me answer should be B
as high pO2 mainly afeect formaion if oxy hb.
as high pO2 mainly afeect formaion if oxy hb.
Mohinder Pal asked • 2 hours agoA specimen of silicon is to be made p-type semiconductor. For this one atom of indium, on an average, is doped in 5 x 107 silicon atoms. If the number density of silicon is 5 x 1028 atoms/m2, then the number of acceptor atoms per cm3 will be- a)2.5 x 1030
- b)1.0 x 1013
- c)1.0 x 1015
- d)2.5 x 1036
Correct answer is option 'C'. Can you explain this answer?
A specimen of silicon is to be made p-type semiconductor. For this one atom of indium, on an average, is doped in 5 x 107 silicon atoms. If the number density of silicon is 5 x 1028 atoms/m2, then the number of acceptor atoms per cm3 will be
a)
2.5 x 1030
b)
1.0 x 1013
c)
1.0 x 1015
d)
2.5 x 1036
Natural system of classification was proposed by?
Santunu Pradhan answered • 3 hours agoNatural system of classification was propesed by Hooker and Bentham
Mohan Kaur asked • 2 hours agoSelect the correct statement with respect to mitosis.- a)Chromatids separate but remain in the centre of the cell in anaphase.
- b)Chromatids start moving towards opposite poles in telophase.
- c)Golgi complex and endoplasmic reticulum are still visible at the end of prophase.
- d)Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.
Correct answer is option 'D'. Can you explain this answer?
Select the correct statement with respect to mitosis.
a)
Chromatids separate but remain in the centre of the cell in anaphase.
b)
Chromatids start moving towards opposite poles in telophase.
c)
Golgi complex and endoplasmic reticulum are still visible at the end of prophase.
d)
Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.
Three blocks of masses m1, m2 and m3 are connected by a massless strings, as shown, on a frictionless table. They are pulled with a force T3 = 40 N. If m1 = 10 kg, m2 = 6 kg and m3 = 4kg, the tension T2 will be
- a)20 N
- b)40 N
- c)10 N
- d)32 N
Correct answer is option 'D'. Can you explain this answer?
Three blocks of masses m1, m2 and m3 are connected by a massless strings, as shown, on a frictionless table. They are pulled with a force T3 = 40 N. If m1 = 10 kg, m2 = 6 kg and m3 = 4kg, the tension T2 will be
a)
20 N
b)
40 N
c)
10 N
d)
32 N
Jananignanamurugan Janan answered • 3 hours ago
Which of the following does not belong to vitamin B group :[MP PMT 2002]- a)Riboflavin
- b)Nicotin
- c)Cyanocobalamine
- d)Tocopherol
Correct answer is option 'D'. Can you explain this answer?
Which of the following does not belong to vitamin B group :
[MP PMT 2002]
a)
Riboflavin
b)
Nicotin
c)
Cyanocobalamine
d)
Tocopherol
Santunu Pradhan answered • 3 hours agoTOCOPHEROL is a vitamin-E so option D is answer
What is the best books for studying neet 2020 in self study to get 650 marks ?
Yash Kudake answered • 4 hours agoErrorless for physics and
NCERT for Biology. Physic and Biology ke liye its more than enough!!
What is the the best for NEET preparation self study or coaching?
Sanjana Singh answered • 4 hours agoIt's depend on you. ..if you focus than you can do with self study also and with coaching also....but focus not there means everything is waste ....so it's your decision ...if you can do with self study it is best..... otherwise take coaching classes. you know your + point so ... decide yourself...
Roshan Lal asked • 2 hours agoA convex lens of focal length 40 cm is held coaxially 12 cm above a mirror of focal length 18 cm. An object held x cm above the lens gives rise to an image coincident with it. Then x is equal to :
- a)12 cm
- b)15 cm
- c)18 cm
- d)30 cm
Correct answer is option 'B'. Can you explain this answer?
A convex lens of focal length 40 cm is held coaxially 12 cm above a mirror of focal length 18 cm. An object held x cm above the lens gives rise to an image coincident with it. Then x is equal to :
a)
12 cm
b)
15 cm
c)
18 cm
d)
30 cm
Jaibir Dutt Kaushik asked • 2 hours agoWhich one of the following statements is incorrect about menstruation?- a)During normal menstruation about 40 ml. blood is lost.
- b)The menstrual fluid can easily clot.
- c)At menopause in the female, there is especially abrupt increase in gonadotropic hormones.
- d)The beginning of the cycle of menstruation is called menarche.
Correct answer is option 'B'. Can you explain this answer?
Which one of the following statements is incorrect about menstruation?
a)
During normal menstruation about 40 ml. blood is lost.
b)
The menstrual fluid can easily clot.
c)
At menopause in the female, there is especially abrupt increase in gonadotropic hormones.
d)
The beginning of the cycle of menstruation is called menarche.
V Ntyagi asked • 2 hours agoWhich one of the following statement regarding auxin is correct?- a)IAA and IBA are natural but NAA, 2, 4-D and 2, 4, 5-T are synthetic auxins.
- b)IAA and NAA are natural but IBA, 2, 4, 5-T and 2, 4 -D are synthetic auxins.
- c)NAA and 2, 4, 5-T are natural but IAA, IBA and 2, 4-D are synthetic auxins.
- d)IAA, NAA, IBA, 2, 4-D and 2, 4, 5-T are synthetic auxins.
Correct answer is option 'A'. Can you explain this answer?
Which one of the following statement regarding auxin is correct?
a)
IAA and IBA are natural but NAA, 2, 4-D and 2, 4, 5-T are synthetic auxins.
b)
IAA and NAA are natural but IBA, 2, 4, 5-T and 2, 4 -D are synthetic auxins.
c)
NAA and 2, 4, 5-T are natural but IAA, IBA and 2, 4-D are synthetic auxins.
d)
IAA, NAA, IBA, 2, 4-D and 2, 4, 5-T are synthetic auxins.
Pawan Choudhry asked • 2 hours agoThe specific heat capacity of a metal at low temperature (T) is given as 
A 100 g vessel of this metal is to be cooled from 20 K to 4 K by a special refrigerator operating at room temperature (27°C). The amount of work required to cool in vessel is- a)equal to 0.002 kJ
- b)greater than 0.148 kJ
- c)between 0.148kJ and 0.028kJ
- d)less than 0.028 kJ
Correct answer is option 'C'. Can you explain this answer?
The specific heat capacity of a metal at low temperature (T) is given as A 100 g vessel of this metal is to be cooled from 20 K to 4 K by a special refrigerator operating at room temperature (27°C). The amount of work required to cool in vessel is
A 100 g vessel of this metal is to be cooled from 20 K to 4 K by a special refrigerator operating at room temperature (27°C). The amount of work required to cool in vessel isa)
equal to 0.002 kJ
b)
greater than 0.148 kJ
c)
between 0.148kJ and 0.028kJ
d)
less than 0.028 kJ
Mohit Khari asked • 2 hours agoExperimental removal of one species in an area sharing similar feeding habit with other species lead to- a)competitive exclusion
- b)resource partioning
- c)competitive release if removed species is superior one
- d)competitive rlease if removed species is inferior one
Correct answer is option 'C'. Can you explain this answer?
Experimental removal of one species in an area sharing similar feeding habit with other species lead to
a)
competitive exclusion
b)
resource partioning
c)
competitive release if removed species is superior one
d)
competitive rlease if removed species is inferior one
Sarida Molla asked • 3 hours agoThe solubility product of CaSO4 is 2.4 x 10-5. When 100 mL of 0.01 MCaCl2 and 100 mL of 0.02 M Na2SO4 are mixed, then.- a)Na2SO4 will precipitate
- b)CaSO4 will precipitate
- c)both will precipitate
- d)none will precipitat
Correct answer is option 'C'. Can you explain this answer?
The solubility product of CaSO4 is 2.4 x 10-5. When 100 mL of 0.01 MCaCl2 and 100 mL of 0.02 M Na2SO4 are mixed, then.
a)
Na2SO4 will precipitate
b)
CaSO4 will precipitate
c)
both will precipitate
d)
none will precipitat
Ishan Rajpal asked • 3 hours agoIn the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Voltmeter is connected in parallel to an electric circuit.
Reason(R): So that whole current pases through it .- a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.
- b)Both Assertion and Reason are true and Reason is not the correct explanation of assertion.
- c)Assertion is true but Reason is false.
- d)Assertion is false but Reason is true.
Correct answer is option 'C'. Can you explain this answer?
In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Voltmeter is connected in parallel to an electric circuit.
Reason(R): So that whole current pases through it .
Assertion(A): Voltmeter is connected in parallel to an electric circuit.
Reason(R): So that whole current pases through it .
a)
Both Assertion and Reason are true and Reason is the correct explanation of assertion.
b)
Both Assertion and Reason are true and Reason is not the correct explanation of assertion.
c)
Assertion is true but Reason is false.
d)
Assertion is false but Reason is true.
Rajiv Gupta asked • 4 hours agoIn the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Study of Fraunhofer lines in the spectrum of sun led to the discovery of hydrogen.
Reason(R): Fraunhofer lines are dark lines in the continuous solar spectrum.- a)Both Assertion and Reason are true and Reason is the correct explanation of assertion.
- b)Both Assertion and Reason are true and Reason is not the correct explanation of assertion.
- c)Assertion is true but Reason is false.
- d)Both Assertion and Reason are false.
Correct answer is option 'A'. Can you explain this answer?
In the following question, a Statement of Assertion (A) is given followed by a corresponding Reason (R) just below it. Read the Statements carefully and mark the correct answer-
Assertion(A): Study of Fraunhofer lines in the spectrum of sun led to the discovery of hydrogen.
Reason(R): Fraunhofer lines are dark lines in the continuous solar spectrum.
Assertion(A): Study of Fraunhofer lines in the spectrum of sun led to the discovery of hydrogen.
Reason(R): Fraunhofer lines are dark lines in the continuous solar spectrum.
a)
Both Assertion and Reason are true and Reason is the correct explanation of assertion.
b)
Both Assertion and Reason are true and Reason is not the correct explanation of assertion.
c)
Assertion is true but Reason is false.
d)
Both Assertion and Reason are false.
Vaibhav Grover asked • 4 hours agoThe electronic configurations of Eu (Atomic No. 63) Gd (Atomic No. 64) and Tb (Atomic No. 65) are :- a)[Xe]4f76s2, [Xe]4f75d16s2 and [Xe]4f96s2
- b)[Xe]4f76s2, [Xe]4f8 6s2 and [Xe]4f8 5d16s2
- c)[Xe]4f6 5d16s2, [Xe]4f7 5d16s2 and [Xe]4f9 5d16s2
- d)[Xe]4f6 5d16s2, [Xe]4f7 5d16s2 and [Xe]4f8 5d16s2
Correct answer is option 'A'. Can you explain this answer?
The electronic configurations of Eu (Atomic No. 63) Gd (Atomic No. 64) and Tb (Atomic No. 65) are :
a)
[Xe]4f76s2, [Xe]4f75d16s2 and [Xe]4f96s2
b)
[Xe]4f76s2, [Xe]4f8 6s2 and [Xe]4f8 5d16s2
c)
[Xe]4f6 5d16s2, [Xe]4f7 5d16s2 and [Xe]4f9 5d16s2
d)
[Xe]4f6 5d16s2, [Xe]4f7 5d16s2 and [Xe]4f8 5d16s2
Fetching relevant content for you
Ask a question
Related Courses
Follow Us
