MCQ Questions

Chromosome Structure Questions With Answers

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Chromosome Structure for NEET

NEET Biology is the scoring paper in the medical entrance examination. Here, you will discover the NEET Biology MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Biology Chromosome Structure Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.

MCQs on Chromosome Structure

1. The least level of chromosome organization is
(a) 30nm fibre
(b) solenoid
(c) nucleosome
(d) none of the above

Answer

Answer: (c)

2. This has the largest number of chromosomes
(a) Pisum sativum
(b) Giant redwood tree
(c) Haplopappus gracilis
(d) Ophioglossum reticulatum

Answer

Answer: (d)

3. A chromosome with a very short arm and a very long arm is referred to as
(a) Metacentric
(b) telocentric
(c) Acrocentric
(d) Sub-metacentric

Answer

Answer: (c)

4. A chromosome is the thickest during
(a) anaphase
(b) prophase
(c) interphase
(d) metaphase

Answer

Answer: (d)

5. The diagrammatic representation of karyotype (morphological representation of chromosomes) of a species is known as
(a) Cladogram
(b) Ecogram
(c) Chromogram
(d) Idiogram

Answer

Answer: (d)

6. If Bb is a gene pair of an individual then the alleles for this gene pair are
(a) A and B
(b) a and A
(c) a and b
(d) b and B

Answer

Answer: (d)

7. Euchromatin
(a) stains lightly
(b) is partially condensed
(c) genetically active chromatin with genes
(d) all of the above

Answer

Answer: (d)

8. The point at which polytene chromosomes appear to be attached together is known as
(a) centriole
(b) centromere
(c) chromomere
(d) chromocenter

Answer

Answer: (d)

9. In which typical stage are Lampbrush chromosomes observed?
(a) meiotic prophase
(b) mitotic metaphase
(c) mitotic prophase
(d) mitotic anaphase

Answer

Answer: (a)

10. Each of the chromosome at the anaphase stage of a bone marrow cell in our body has
(a) one chromatid
(b) two chromatids
(c) several chromatids
(d) no chromatids

Answer

Answer: (a)

Haloalkanes and Haloarenes MCQ

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Haloalkanes and Haloarenes MCQ for NEET

NEET  Chemistry is the scoring paper in the medical entrance examination. Here, you will discover the NEET Chemistry MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Chemistry objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Chemistry Haloalkanes and Haloarenes Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.

MCQs on Haloalkanes and Haloarenes

1. Which of the following undergoes nucleophilic substitution exclusively by SN1 mechanism?
(a) Benzyl Chloride
(b) Ethyl chloride
(c) Chlorobenzene
(d) Isopropyl chloride

Answer

Answer: (a)

2. The increasing order of nucleophilicity would be?
(a) Cl– < Br– < I–
(b) I– < Cl– < Br–
(c) Br– < Cl– < F–
(d) I– < Br– < Cl–

Answer

Answer: (a)

3. Which of the following is most reactive towards SN1 reaction?
(a) C6H5C(CH3)C6H5Br
(b) C8H5CH2Br
(c) C6H5CH(C6H5)Br
(d) C6H5CH(CH3)Br

Answer

Answer: (a)

4. CH3CH2CH2Br + NaCN → CH3CH2CH2CN + NaBr, will be fastest in
(a) ethanol
(b) methanol
(c) N, N-dimethylformamide
(d) Water

Answer

Answer: (c)

5. A Grignard reagent may be made by reacting magnesium with
(a) Methyl amine
(b) Diethyl ether
(c) Ethyl iodide
(d) Ethyl alcohol

Answer

Answer: (c)

6. C-Cl bond of chlorobenzene in comparison to C-Cl bond in methyl chloride is
(a) Longer and weaker
(b) Shorter and weaker
(c) Shorter and stronger
(d) Longer and stronger

Answer

Answer: (c)

7. A solution of (+) 2-chloro-2-phenylethane in toluene racemises slowly in the presence of a small amount of SbCl5, due to the formation of
(a) carbanion
(b) carbene
(c) free radical
(d) carbocation

Answer

Answer: (d)

8. The decreasing order of boiling points of alkyl halides is
(a) RF > RCl > RBr > RI
(b) RBr > RCl > RCl > RF
(c) RI > RBr > RCl > RF
(d) RCl > RF > RI > RBr

Answer

Answer: (c)

9. Phosgene is commonly known as
(a) thionyl chloride
(b) carbonyl chloride
(c) carbon dioxide and phosphine
(d) phosphoryl chloride

Answer

Answer: (b)

10. The reaction of tert butyl bromide with sodium methoxide produces mainly
(a) isobutane
(b) isobutylene
(c) tert-butyl methyl ether
(d) sodium tert butoxide

Answer

Answer: (b)

Neural Communication Questions With Answers

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Neural Communication for NEET

NEET Biology is the scoring paper in the medical entrance examination. Here, you will discover the NEET Biology MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Biology Neural Communication Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.

MCQs on Neural Communication

1. The mode of communication between the neurons by sending electrical impulses known as _______.
(a) Membrane potentials
(b) Neuromodulators
(c) Neurotransmitters
(d) Action potentials

Answer

Answer: (d)

2. If the cell stimulation is strong, then the strength of the action potential produced would be ______.
(a) Weaker than the produced by weak stimulation
(b) Stronger than the produced by weak stimulation
(c) Double then the produced by the weak stimulation
(d) No different to the produced by weak stimulation

Answer

Answer: (d)

3. Dopamine, serotonin and noradrenaline are collectively called _______.
(a) Amines
(b) Hallucinogens
(c) Anxiolytics
(d) Neurotransmitters

Answer

Answer: (a)

4. The excess amount of produced neurotransmitters by presynaptic neurons is __________.
(a) Taken up by postsynaptic neurons
(b) Recycled back into the presynaptic neuron
(c) Removed and taken around the rest of the body
(d)  Eliminated by substances contained within the cell body

Answer

Answer: (b)

5. Acetylcholine is a neurotransmitter enabling communication between muscles and nerves. In case of an interruption in the interaction between acetylcholine and acetylcholine receptor sites on the muscles, this condition can occur in _______.
(a) Botulism
(b) Myasthenia gravis
(c) Multiple sclerosis
(d) Both A and B

Answer

Answer: (b)

6. Which of the following disorder causes dopamine neurons to die?
(a) Seizure disorder
(b) Multiple sclerosis
(c)Parkinson’s disease
(d) Lou Gehrig’s disease

Answer

Answer: (c)

7. Which of the following is a genetic disorder that induces neurons in the brain to drain away and die?
(a) Poliomyelitis
(b) Encephalitis
(c) Multiple sclerosis
(d) Huntington’s disease

Answer

Answer: (d)

8. Which of the following is called the common neurotransmitter?
(a) Acetylcholine
(b) Dopamine
(c) Serotonin
(d) All of the above

Answer

Answer: (d)

9. The cavity of the diencephalon is known as _______.
(a) First ventricle
(b) Third ventricle
(c) Second ventricle
(d)  Fourth ventricle

Answer

Answer: (b)

10. Which of the following is the cause for transmission of nerve impulse through nerve fibre in a single direction?
(a) Neurotransmitters released by dendrites.
(b) Neurotransmitters released by axon endings.
(c) Nerve fibre is insulated by a medullary sheath
(d) None of the above.

Answer

Answer: (b)

MCQ Questions on Chromosomal Basis of Inheritance

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MCQ Questions on Chromosomal Basis of Inheritance

Biology is the study of life. Below, You will find a list of Biology MCQ Questions as per the latest prescribed syllabus. Ace up your preparation with the Objective Questions available on Chromosomal Basis of Inheritance and enhance your subject knowledge. Understand the concept clearly by consistently practicing the Multiple Choice Questions and score well in your exams.

MCQ Questions on Chromosomal Basis of Inheritance

1. The term chromosome was coined by ___________.
(a) Sutton
(b) Boveri
(c) Waldeyer
(d) Hoffmeister

Answer

Answer: (c) Waldeyer.

2. Chromosomes found in the salivary gland of Drosophila is___________.
(a) Polytene
(b) Lampbrush
(c) Supernumerary
(d) B-chromosomes

Answer

Answer: (a) Polytene.

3. Lampbrush chromosomes occur in___________.
(a) Oocytes
(b) Cancer cells
(c) Lymph glands
(d) Salivary glands

Answer

Answer: (a) Oocytes.

4. Which of the following is true about the Chromatids?
(a) It is a haploid chromosome
(b) It is a complete chromosome
(c) It is a duplicate chromosome
(d) It is one-half of the replicated chromosome

Answer

Answer: (d) It is one-half of the replicated chromosome.

5. The centromere is that part of the chromosome where___________.
(a) Nicking occurs
(b) Chromatids are attached
(c) Nucleoli are formed
(d) Crossing-over takes place

Answer

Answer: (b) Chromatids are attached.

6. The ends of the chromosome are called ___________.
(a) Satellites
(b) Centromeres
(c) Telomeres
(d) Kinetochore

Answer

Answer: (c) Telomeres.

7. Chromosomes were first observed by___________.
(a) Fleming
(b) Waldeyer
(c) Strasburger
(d) Hoffmeister

Answer

Answer: (d) Hoffmeister.

8. A chromosome with sub-terminal centromere is___________.
(a) Acrocentric
(b) Acentric
(c) Metacentric
(d) Telocentric

Answer

Answer: (a) Acrocentric.

9. The giant chromosome with a number of chromonemeta is___________.
(a) Hetrochromosome
(b) Polytene chromosome
(c) Lampbrush chromosome
(d) Supernumerary chromosome

Answer

Answer: (b) Polytene chromosome.

10. A chromosome with centromere near the middle is called___________.
(a) Metacentric
(b) Acrocentric
(c) Telocentric
(d) Submetacentric

Answer

Answer: (d) Submetacentric.

11. Puffs or balbiani rings in the salivary gland chromosome are the sites of___________.
(a) Protein synthesis
(b) RNA synthesis
(c) DNA replication
(d) DNA duplication

Answer

Answer: (b) RNA synthesis.

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12. Chromosomal theory of inheritance was proposed by___________.
(a) Sutton in 1902
(b) Boveri in 1902
(c) Correns in 1909
(d) Sutton and Boveri in 1902

Answer

Answer: (d) Sutton and Boveri in 1902.

13. More than 200 chromosomes occur in___________.
(a) Dog
(b) Amoeba
(c) Chicken
(d) Gorilla

Answer

Answer: (b) Amoeba.

14. A colour blind daughter may be born if the___________.
(a) Father is normal and the mother is a carrier
(b) Father is normal and the mother is colour blind
(c) Father is colour blind and mother is a carrier
(d) Father is colour blind and mother is normal

Answer

Answer: (c) Father is colour blind and mother is a carrier.

15. A somatic cell in a human male contains___________.
(a) No gene on the sex chromosome
(b) Genes on only on sex chromosomes
(c) Two genes for every sex-linked character
(d) Only one sex-linked gene for each character

Answer

Answer: (d) Only one sex-linked gene for each character.

16. The blue-green algae and bacteria contain ___________.
(a) Three linkage groups
(b) Two linkage groups
(c) One linkage group
(d) None of the above

Answer

Answer: (c) One linkage group.

17. What is the number of linkage groups in the Drosophila?
(a) Two
(b) Four
(c) Eight
(d) None of the above

Answer

Answer: (b) Four.

18. Gene for colour blindness in man is located on ___________.
(a) Both X and Y chromosome
(b) Y-chromosome only
(c) X-chromosome only
(d) Either X-chromosome or Y-chromosome

Answer

Answer: (c) X-chromosome only.

19. Chromosomal constitution in human females can be best written as___________.
(a) 46
(b) 44+2
(c) 44A+XY
(d) 44A+XX

Answer

Answer: (d) 44A+XX.

20. Which of the following disease is sex-linked?
(a) Hepatitis
(b) Leukaemia
(c) Malignancy
(d) Colour blindness

Answer

Answer: (d) Colour blindness.

Coordination Compounds MCQ

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Coordination Compounds MCQ for NEET

NEET  Chemistry is the scoring paper in the medical entrance examination. Here, you will discover the NEET Chemistry MCQ Questions for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Chemistry objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. NEET Chemistry Coordination Compounds Multiple Choice Questions make you feel confident in answering the question in the exam & increases your scores to high.

MCQs on Coordination Compounds

1. When 0.1 mol CoCl3(NH3)5 is combined with excess AgNO3, then 0.2 mol AgCl is obtained. The conductivity of the solution suits the
(a) 1:3 electrolyte
(b) 1:1 electrolyte
(c) 3:1 electrolyte
(d) 1:2 electrolyte

Answer

Answer: (d)

2. A chelating agent has two or more than two donor atoms to bind to a single metal ion. Which of the following is not a chelating agent?
(a) Thiosulphato
(b) Oxalato
(c) Glycinato
(d) Ethane-1,2-diamine

Answer

Answer: (a)

3. IUPAC name of [Pt(NH3)2Cl(NO2)] is
(a) Platinum diamminechloronitrite
(b) Chloronitrito-N-ammineplatinum (II)
(c) Diamminechloridonitrito-N-platinum (II)
(d) Diamminechloronitrito-N-plantinate (II)

Answer

Answer: (c)

4. In the complex [E(en)2(C2O4)]NO2 (where (en) is ethylenediamine) _______are the coordination number and the oxidation state of the element ‘E’ respectively.
(a) 6 and 2
(b) 2 and 2
(c) 4 and 3
(d) 6 and 3

Answer

Answer: (d)

5. The sum of coordination number and oxidation number of the metal M in the complex [M(en)2(C2O4)]Cl (where (en) is ethylenediamine) is
(a) 9
(b) 6
(c) 7
(d) 8

Answer

Answer: (a)

6. Some salts containing two different metallic elements give test for only one of them in solution, such salts are
(a) double salts
(b) normal salts
(c) complex salts
(d) None of these

Answer

Answer: (c)

7. An example of a sigma bonded organometallic compound is
(a) Grignard reagent
(b) Ferrocene
(c) Cobaltocene
(d) Ruthenocene

Answer

Answer: (a)

8. Iron carbonyl, Fe(CO)5 is
(a) Tetranuclear
(b) Mononuclear
(c) Dinuclear
(d) Trinuclear

Answer

Answer: (b)

9. The type of isomerism shown by the complex [CoCl2(en)2] is
(a) Geometrical isomerism
(b) Coordination isomerism
(c) Linkage isomerism
(d) Ionization isomerism

Answer

Answer: (a)

10. Which of the following elements do not form a complex with EDTA?
(a) Ca
(b) Mg
(c) Be
(d) Sr

Answer

Answer: (c)

Chapter Wise MCQ Questions for Class 6 Social Science with Answers | Objective Questions of 6th Class Social Science: Geography, History, Civics, Economics

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MCQ Questions for Class 6 Social Science with Answers

Class 6 Students who want to excel in their CBSE Board Exams can refer to our  MCQ Questions for Class 6 Social Science with Answers as they are quite scoring. Ace up your preparation using the MCQ Quiz Questions for Class 6 SS Geography, History, Civics, Economics. All the Objective Questions of 6th Class Social Science prescribed here are as per the latest academic syllabus 2021-22. Remediate the knowledge gap using these quick practice questions and improve in your weak areas.

Along with the Class 6 MCQ Questions and Answers you can also get other preparation material such as CBSE Class 6 Social Science Map Pointing and NCERT Books for Class 6 Social Science for free and complement your preparation. Practicing regularly using the Multiple Choice Type Questions of 6th Grade Social Science and get good grades in exams and stand out from the rest of the crowd.

Class 6 Social Science MCQs Questions with Answers Chapter Wise PDF Download

Make the most out of the Class 6th Social Science MCQ Questions with Answers for all parts Geography, History, Civics, Economics through the quick links mentioned below. Simply tap on the respective chapter you wish to learn and know the topics within. You can self-examine your preparation standards taking the help of these MCQ Quiz Questions and if you have any questions you can look up NCERT Solutions for Class 6 Social Science to resolve your ambiguities in no time.

MCQ Questions for Class 6 Social Science Geography

MCQ Questions for Class 6 Social Science Geography: The Earth: Our Habitat

  1. The Earth in the Solar System Class 6 MCQ Questions
  2. Globe Latitudes and Longitudes Class 6 MCQ Questions
  3. Motions of the Earth Class 6 MCQ Questions
  4. Maps Class 6 MCQ Questions
  5. Major Domains of the Earth Class 6 MCQ Questions
  6. Major Landforms of the Earth Class 6 MCQ Questions
  7. Our Country India Class 6 MCQ Questions
  8. India Climate Vegetation and Wildlife Class 6 MCQ Questions

MCQ Questions for Class 6 Social Science History

MCQ Questions for Class 6 Social Science History: Our Pasts – I

  1. What, Where, How, and When? Class 6 MCQ Questions
  2. On The Trial of the Earliest People Class 6 MCQ Questions
  3. From Gathering to Growing Food Class 6 MCQ Questions
  4. In the Earliest Cities Class 6 MCQ Questions
  5. What Books and Burials Tell Us Class 6 MCQ Questions
  6. Kingdoms, Kings and an Early Republic Class 6 MCQ Questions
  7. New Questions and Ideas Class 6 MCQ Questions
  8. Ashoka, The Emperor Who Gave Up War Class 6 MCQ Questions
  9. Vital Villages, Thriving Towns Class 6 MCQ Questions
  10. Traders, Kings and Pilgrims Class 6 MCQ Questions
  11. New Empires and Kingdoms Class 6 MCQ Questions
  12. Buildings, Paintings, and Books Class 6 Extra Questions

MCQ Questions for Class 6 Social Science Civics

MCQ Questions for Class 6 Social Science Civics: Social and Political Life – I

  1. Understanding Diversity Class 6 MCQ Questions
  2. Diversity and Discrimination Class 6 MCQ Questions
  3. What is Government Class 6 MCQ Questions
  4. Key Elements of a Democratic Government Class 6 MCQ Questions
  5. Panchayati raj Class 6 MCQ Questions
  6. Rural Administration Class 6 MCQ Questions
  7. Urban Administration Class 6 MCQ Questions
  8. Rural Livelihoods Class 6 MCQ Questions
  9. Urban Livelihoods Class 6 MCQ Questions

FAQs on Class 6th Social Science Objective Questions PDF

1. Where can I find Class 6 MCQ Questions for Social Science All Chapters?

You can find Class 6 MCQ Questions for Social Science All Chapters on NCERTBooks.guru a reliable portal for all your needs.

2. How do I score well in the 6th Class Social Science CBSE Board Exam?

Practice using the CBSE Class 6 Social Science Notes and MCQ Quiz Questions of 6th Class Social Science over here on a regular basis so that you can understand your areas of need and work on them before the exam commencement.

3. How to download Class 6th Multiple Choice Questions of Social Science PDFs?

All you have to do is simply tap on the direct links available to access the 6th Class Social Science Multiple Choice Questions and Answers PDFs.

Summary

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