Showing posts from May, 2022
![BF 3 is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are: (1) sp 3 and 4 (2) sp 3 and 6 (3) sp 2 and 6 (4) sp 2 and 8 [ NEET 2021 ]](https://blogger.googleusercontent.com/img/a/AVvXsEgznvqso-eabqBytDHh8O7Dg4lCWKc29R0EeVL_VUJajUKhdt7riSloiAuLkhCrD4djL87EOUae_L8NaLTGSQ7LZkYxNfpO7sSAUm9o8_eO5SdFFl5hzqKs3SnHZGE7w9MAuCOEN8Giq2nC0_e3WKvThZ9UKVmJ-WAQ45N6D4SFex7gYSDFOgI74_KSBw=w74-h74-p-k-no-nu)
![Chronic auto immune disorder affecting neuro muscular junction leading to fatigue, weakening and paralysis of skeletal muscle is called as: (1) Arthritis (2) Muscular dystrophy (3) Myasthenia gravis (4) Gout [NEET 2021 ]](https://blogger.googleusercontent.com/img/a/AVvXsEhG22kbbp63651Gz8LYCWtgMb_zGW6O3aCIo5FzK7PSW84gOnfegMmvBS3vZgRDLWK3TwHtbcKHEamk92-Ix0FXaK5zki54-kCVpoYPZT2zGW_wsY19_lEb3d6Q8dX85qlmhzHystjFUQfOHRFVUJAjuOsv2bVS46c0j24RscO4P8Yk3pAfokqzU6i6gw=w74-h74-p-k-no-nu)
![The correct structure of 2,6-Dimethyl-dec-4-ene is: [NEET 2021 ]](https://blogger.googleusercontent.com/img/a/AVvXsEi0HOSYOWnC2w50f6ggGMWgkV3GS-xK9T1-OansDZIYsl368_pRfMmc0c_BbqiBAeYvqoq57JCMU3Qg3-J2LJlVomenjTNiqyq3uynM5Rjj5qj61wNF6zljm5Bbrtda1oUodSgk2Tungy4ZqF3ePax3n3K-hCpaw1ynBm5WWYAa2DixaM7GwkKsVBMvrQ=w74-h74-p-k-no-nu)
![Which one of the following belongs to the family Muscidae ? (1) Fire fly (2) Grasshopper (3) Cockroach (4) House fly [NEET 2021]](https://blogger.googleusercontent.com/img/a/AVvXsEhzYaHV4BDXVr3nRKxbjqNDhKvR3blaBCHlagXx76MarcFvqrBm0LOzUmqMddsrcV1Bre8Dy6AlCW_kXvRsI4uzcC5J8JHXFFHqkkEuZpm3bq39nZd_AQ1TD94P3FptZqi6IcEkgwE64Ux_IWFEkBOgZ2aXeEeJhsb6WGyLqBjoQdnpB8eO58EI456Qww=w74-h74-p-k-no-nu)
![Zygotic meiosis is characteristic of 1. Fucus 2. Funaria 3. Chlamydomonas 4. Marchantia [NEET 2017 ]](https://blogger.googleusercontent.com/img/a/AVvXsEhl3GdGxVhXsleRrlNcUoDALhJMLU1p22Mnlv73sGz9Ke0uvqN3FyKo_z92ZOSGuV3Gq20ksrg9xZB5PlDTNwH688WxGj2RfkEEmyj1A6xJzFdIivbcQXlkOVFsJCyyuaYy90g_x8s3thmJ31WVQxoRJwNrptLWSYqN7olPzK0KyQYoZenVPiROx_Mxpg=w74-h74-p-k-no-nu)
Class 11 | Biology | Chapter 2 | Biological Classification
Zygotic meiosis is characteristic of 1. Fucus 2. Funaria 3. Chlamydomonas 4. Marchantia [NEET 2017 ]
![Which one is wrongly matched? 1. Uniflagellate gametes - Polysiphonia 2. Biflagellate zoospores - Brown algae 3. Gemma cups - Marchantia 4. Unicellular organism - Chlorella [ NEET 2018 ]](https://blogger.googleusercontent.com/img/a/AVvXsEjik-LvuUouO9BhKfmhF0DwMiCJ60fE1BJg36AHSGloUdzsGZ8L9GJ3jG_WTAYNI6wPlQO7nBRzIPqlBugvpORCLYUlY8QIFCnKxPbAc5JuJM0BPY_YQ8iFHBOZPOPicVRh3m6PAFTiYakhg2qMsXKKhxcnciwDrIKzeUomgA-h6ReepnRClbmTkfKbRQ=w74-h74-p-k-no-nu)
Class 11 | Biology | Chapter 2 | Biological Classification
Which one is wrongly matched? 1. Uniflagellate gametes - Polysiphonia 2. Biflagellate zoospores - Brown algae 3. Gemma cups - Marchantia 4. Unicellular organism - Chlorella [ NEET 2018 ]
![The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at G1 phase is 8, what would be the number of chromosomes after S phase ? (A) 8 (B) 16 (C) 4 (D) 32 [NEET 2021 ]](https://blogger.googleusercontent.com/img/a/AVvXsEjGJzacE4z1cMoKUCVJe6tw5vFfvP1pnaCoJMXGreveCGYLaBFcihEjbTNMt2UqTYC0L0QrUpsnPiHCrrrTAgLlq7uIUPpw5Lg15S5xK18szuK8t1ABG026tuT6taGdOFQRQNgg2WI_G0STM0t2kmipnkNTXuPAdQRObArONuFNsTuNsyFvbRHEUaKsdg=w74-h74-p-k-no-nu)
Class 11 | Biology | chapter 10 | Cell Cycle and Cell Division
The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at G1 phase is 8, what would be the number of chromosomes after S phase ? (A) 8 (B) 16 (C) 4 (D) 32 [NEET 2021 ]
Class 11 | Chemistry | Chapter 03 | Classification of Elements and Periodicity in Properties
Johann Doberiner gave the idea of trends among physical and ...X... of several groups of three elements. Here, X refers to (a) atomic number (b) atomic mass (c) chemical properties (d) None of these
Class 11 | Physics | chapter 2 | Units And Measurements
Identify the pair whose dimensions are equal. (a) Torque and work (b) Stress and energy (c) Force and stress (d) Force and work.
Class 11 | Chemistry | Chapter 03 | Classification of Elements and Periodicity in Properties
In 1800, only ....X.... elements were known. Here, X refers to (a) 63 (b) 31 (c) 114 (d) 92
Class 11 | Chemistry | Chapter 03 | Classification of Elements and Periodicity in Properties
The law of triads is applicable to a group of (a) Cl, Br, I (b) C, N, O (c) Na, K, Rb (d) H, O, N
Class 11 | Biology | Chapter 16 | Digestion and Absorption
To move into the intestinal mucosa, fatty acids and glycerol are first incorporated into: (1) Chyle (2) Micelles (3) Chylomicroms (4) Lipoproteins
![Which one of the following statement is false regarding digestion and absorption of food in humans? 1. Oxyntic cells in our stomach secrete the proenzyme pepsinogen. 2. Glucose and amino acids are absorbed with the help of carrier ions like Na+. 3. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries. 4. About 30% of starch is hydrolysed by salivary amylase in our mouth. [NEET 2009]](https://blogger.googleusercontent.com/img/a/AVvXsEikOt07Fqlw6veo2ozev7iDsdxc56rPGIJLt2i4ODz_Db4qBzckNemU8vYiWaMx1zUPTzwUh2rsYW9Vizq0wnjDbrHAiHl6NHHS95oBe_dmtdQ_7P7FNvOwJcI6SOSutcGPBLR8vPu7DgXPOc8bRZbnJizusUpnYwkzE6-RnREGS8dzn3q4LThsuMWMRw=w74-h74-p-k-no-nu)
Class 11 | Biology | Chapter 16 | Digestion and Absorption
Which one of the following statement is false regarding digestion and absorption of food in humans? 1. Oxyntic cells in our stomach secrete the proenzyme pepsinogen. 2. Glucose and amino acids are absorbed with the help of carrier ions like Na+. 3. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries. 4. About 30% of starch is hydrolysed by salivary amylase in our mouth. [NEET 2009]
Class 11 | Biology | Chapter 20 | Locomotion and Movement
Small intestine is distinguishable into 3 parts, a 'C' shaped ________ a long coiled middle portion _________ and a highly coiled: (1) Ileum, jejunum, duodenum (2) Duodenum, Jejunum, ilium (3) Duodenum, jejunum, ileum (4) Caecum, duodenum, ileum
Class 11 | Biology | Chapter 9 | Biomolecules
All the following amino acids are aromatic, except (a) tyrosine (b) phenylalanine (c) tryptophan (d) valine
Class 11 | Biology | Chapter 9 | Biomolecules
Which of the following is/are essential fatty acid(s)? (a) Linoleic acid (b) Linolenic acid (c) Arachidonic acid (d) All of these
![A convex lens 'A' of focal length 20 cm and a concave lens 'B' of focal length 5 cm are kept along the same axis with a distance 'd' between them. If a parallel beam of light falling on 'A' leaves 'B' as a parallel beam, then the distance 'd' in cm will be :- (1) 25 (2) 15 (3) 50 (4) 30 [ NEET 2021 ]](https://blogger.googleusercontent.com/img/a/AVvXsEgWR0m8yomykFwTNEYjUNrlXlzTx8pIsCZ5Z3IqdF-qeZkvv9D5_VoktBtTYcg-1jF_4WJu0o7mKpHfSMiO4ZtTTil-G9-bngXQb-eq1S2q5JmtC4lUSbNk6KecK5JDn5Tw3P7Mk0MjEzX7JQbYNHMq6ZReMm5bz8x-HmBLHmQDZkQe6uvFpeV1NDFZHA=w74-h74-p-k-no-nu)
Class 11 | Biology | Chapter 9 | Biomolecules
The bond between phosphate and hydroxyl group of sugar in nucleic acid is _______. (a) glycosidic bond (b) peptide bond (c) ester bond (d) none of these
Class 11 | Biology | Chapter 9 | Biomolecules
Feedback inhibition of enzymes is affected by (a) enzyme (b) substrate (c) end product (d) intermediate end products
Class 12 | Chemistry | Chapter 14 | Biomolecules
Co-enzyme is (a) always a protein. (b) often a metal. (c) always an inorganic compound. (d) often a vitamin
![Which of the following statements about ozone is correct ? 1. Tropospheric ozone protects us from UV radiations. 2. Stratospheric ozone is 'bad'. 3. Tropospheric ozone is 'good' 4. Stratospheric ozone protects us from UV radiations.[NEET 2019 ]](https://blogger.googleusercontent.com/img/a/AVvXsEh_DnXP8NVts0AqZcRoQmQRXVJpAyXHrbef-lD2CfBkbJwJLGiWwQU2mJb0a51elGAeUys3JqtG035QT2OwRHIPSnRYu2_q81b0uoacRlFrVaYjUVgpTrrerlRQ5Tz4ehIl-PGFyoAdjOc18fmhMCMX7Z2I7ahgISqddD_gMvtyaZZJgMydt9qYM8xz6w=w74-h74-p-k-no-nu)
![Snow-blindness in Antarctic regions is due to: 1. Inflammation of cornea due to high doses of UV-B radiation 2. High reflection of light from snow 3. Damage to the retina caused by infra-red rays 4. Freezing of fluids in the eye by low temperature [NEET 2021]](https://blogger.googleusercontent.com/img/a/AVvXsEiBuDwe-E5ZikQrJD-eFysrX6OQYrlktB_t7iLBtXj5lVuUsCywS-HFgWgEt7nJ1UpcaMjzkvgmc_QV42MnFPQ-SzBXlr1WL7HSCujHxaoxgkQjVUzRWyW-ae8J9FSfrkteVKZG95473Q0XCGDcbENcUwhCKNw7SSYbsyo6LLNCzDmQ1yCcVMtDj24Ylg=w74-h74-p-k-no-nu)
Class 12 | Biology | chapter 16 | Environmental Issues
Snow-blindness in Antarctic regions is due to: 1. Inflammation of cornea due to high doses of UV-B radiation 2. High reflection of light from snow 3. Damage to the retina caused by infra-red rays 4. Freezing of fluids in the eye by low temperature [NEET 2021]
![Q. Dobson units are used to measure thickness of: (1) Ozone (2) Troposphere (3) CFCs (4) Stratosphere [ NEET 2021]](https://blogger.googleusercontent.com/img/a/AVvXsEhPlVRPi-qfk0waXufaio7W41VejDICgntEjQUP4eFS5tFhiKoDPdNL469sNQR5NDCwlE_RtKffc-2JlqQZlMf7bBPsInIyVb6G_Fg_ZhUy0IIQcog18I3nqzluzr3CXkSwUnW4g-JIpOQDqqXeUBjPF6M3h_CFP27xUpab1tGol4YDHhajOEHulj37CQ=w74-h74-p-k-no-nu)
![Which of the following statement is correct? 1. Ovules are not enclosed by ovary wall in gymnosperms 2. Selaginella is heterosporous, while Salvinia is homosporous 3. Horsetails are gymnosperms 4. Stems are usually unbranched in both Cycas and Cedrus [NEET 2018 ]](https://blogger.googleusercontent.com/img/a/AVvXsEjD1Uq0PDCK7UOsZ-SHxu0nZFsxhkPQg_Zkx2Iks17WWP6ryfEzj6V_NWeP_LtsMMrORntDYWXhNN31eE0jlBl2lLt6VgIZ10ELujvUjubOHvj1K-SwGQqKjYxKf1viSl3Gi6Q7lqmk-Chbv8cQEPtaX3sBgMR3KmLTv4RbQ-BYjAeuke1PK2Gdl4Yuaw=w74-h74-p-k-no-nu)
Class 11 | Biology | chapter 3 | Plant Kingdom
Which of the following statement is correct? 1. Ovules are not enclosed by ovary wall in gymnosperms 2. Selaginella is heterosporous, while Salvinia is homosporous 3. Horsetails are gymnosperms 4. Stems are usually unbranched in both Cycas and Cedrus [NEET 2018 ]
Class 11 | Biology | Chapter 16 | Digestion and Absorption
The enzyme that is not present in succus entericus is (1) maltase (2) nucleases (3) nucleosidase (4) lipase
Class 11 | Biology | Chapter 16 | Digestion and Absorption
Muscularis layer of the wall of the alimentary canal is formed by:- 1. Smooth muscle arranged into an inner longitudinal and an outer circular layer 2. Smooth muscle arranged into an inner circular and an outer longitudinal layer 3. Skeletal muscle arranged into an inner longitudinal and an outer circular layer 4. Skeletal muscle arranged into an inner circular and an outer longitudinal layer
Class 11 | Biology | Chapter 16 | Digestion and Absorption
The enzyme enterokinase helps in the conversion of 1. pepsinogen into pepsin 2. trypsinogen into trypsin 3. caseinogen into casein 4. proteins into polypeptides
![The IUPAC name for the complex [Co(ONO)(NH3 ) 5 ]Cl2 is (a) pentaamminenitrito-N-cobalt(II) chloride (b) pentaamminenitrito-N-cobalt(III) chloride (c) nitrito-N-pentaamminecobalt(III) chloride (d) nitrito-N-pentaamminecobalt(II) chloride](https://blogger.googleusercontent.com/img/a/AVvXsEjrqija9nLAaDib4ZpPNeHBSy8eyIEKZETphcQjYoS0OajxrRFY57vwSWM4UIz90wxGd61MTIdXR8wzM26kdYlPvHaFshlGI95UoxAC6I2Hlj0q5fTRP-mMUgdJmLcrjyHIp-kyiE82hNZ2P77QtroPMccVRlzPwhkr0GM4I5EzEEc0r4J8Ap4FNx5dcg=w74-h74-p-k-no-nu)
![A ball of mass 0.15 kg is dropped from a height 10 m, strikes the ground and rebounds to the same height. The magnitude of impulse imparted to the ball is (g=10 m/s2)g=10 m/s2 nearly: 1. 2.1 kg m/s 2. 1.4 kg m/s 3. 0 kg m/s 4. 4.2 kg m/s [NEET 2021]](https://blogger.googleusercontent.com/img/a/AVvXsEhpxd-extMUCTa3RuWZgUHqPoTjk9dAutaRkwsSc_feZrNmjkoFeKB1Bl6mItzXEOMsplgGY7MQDDodsW0bHxH5cOa4S3CqyymNv6u2N6AtA7MO1TJcnwqHI1gwSQP50pl3UAicNMhM4uq8s2ofpRt5zqGFbgw3RpeipyJusoIN1MNiCbuXNMrr0uO40g=w74-h74-p-k-no-nu)
