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Preparation for Medical Entrance exams - Biology, Physics and Chemistry

(588 Posts)

This thread is dedicated to preparation for Biology, Physics and Chemistry section of Medical Entrance exams like AIPMT, AIIMS and AFMC. You may share questions related to topics like Physiology of Animal, Ecology and Environment, Biotechnology, Cell: Structure, Genetics and Evolution, Inorganic Chemistry, Physical Chemistry, Organic Chemistry, Ray Optics, Electrodynamics, Electrostatics, Thermodynamics, Heat, Sound, Waves etc.

Question should not exceed 100 characters.Use add options for multiple choice questions and "Uploadimage/Add related data" for passage text papers.
Question should be at least 10 characters long.
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Sherbournisaacsps
Shared from Living World on Jun 09, 2021 5:13 PM

Which taxon out of the following aggregates to constitute a division in plants?

 
Class
Order
Family
Phylum
#
Please type your answer before submitting.

I selected the right answer but why has it given wrong for me

Varchashi
Shared from NEET (20 May, 2019) on Jul 19, 2020 11:00 AM

The major products C and D formed in the following reaction respectively are:

H3C - CH2 - CH2 - O - C(CH3)3 C + D

 
H3C - CH2 - CH2 - OH and HO - C(CH3)3
H3C - CH2 - CH2 - OH and I - C(CH3)3
H3C - CH2 - CH2 - I and I - C(CH3)3
H3C - CH2 - CH2 - I and HO - C(CH3)3
Please type your answer before submitting.

Wrong answer anser is 3

Akshita Bist
Shared from Mineral Nutrition (Class - XI) on Jun 18, 2020 1:04 AM

Which of the following is not an essential micronutrient?

 
Nickel
Manganese
Sodium
Boron
Please type your answer before submitting.

Essential Micronutrients or trace elements are needed in very small amounts
rn(less than 10 mmole Kg -1 of dry matter). These include iron, manganese,
rncopper, molybdenum, zinc, boron, chlorine, and nickel

Raunak Barath
Shared from Cell Structure and Function on May 30, 2020 10:44 AM

Which of the following were initially named sarcode by Dujardin and fila by Flemming, respectively?

 
Mitochondria and protoplast
Protoplasm and mitochondria
Lysosome and mitochondria
Sarcoplasm and flagella
#
Please type your answer before submitting.

Sarcodes imply protoplasm of animals, Mitochondria were discovered by Kolliker (1880) in striated muscles of insects and given the present name by Benda (1898). Mitochondria were called sarcomeres by Kolliker (1880), fila by Flemming (1882), and bioblasts by Altman (1890).

Immadi Sreetarun
Shared from NEET Mock - 23 on May 24, 2020 11:31 AM

Salicylic acid is prepared from phenol by:

 
Reimer-Tiemann reaction
Williamsons`s synthesis
Kolbe electrolysis reaction
None of the above
Please type your answer before submitting.

The industrial preparation of salicylic acid is carried out by Kolbe-Schmitt reacion