Biology: Know Your Vitamin Quiz (#biology)(#NEET)(#PreMedical)(#Class12Biology)(#compete4exams)(#eduvictors)

Know Your Vitamins Quiz

1. What is the source of Vitamin A in Leafy vegetables?

2. Which Vitamin is known as the anti-infetive vitamin

3. Which Vitamin is used for ELISA test (AIDS)?

4. Which Vitamin contains Cobalt?

CBSE Class 11 - Chemistry - Chapter - Structure Of Atom - Important Points To Remember (#class11Chemistry)(#NEET)

CBSE Class 11 - Chemistry - Chapter - Structure Of Atom - Important Points To Remember

Structure of Atom

1. Discovery of Electron — Discharge Tube Experiment:

In 1879, William Crooks studied the conduction of electricity through gases at low pressure. He performed the experiment in a discharge tube which is a cylindrical hard glass tube about 60 cm. in length.

Mass of electron = 9.109534 x 10⁻³¹ kg

Charge on a electron = (-) 1.602 x 10⁻¹⁹ C

 

2. Properties of Cathode Rays

(i) Cathode rays travel in straight line.

(ii) Cathode rays start from cathode and move towards the anode.

Physicists and Their Major Contributions (#class11Physics)(#Class12Physics)(#NEET)(#JEE)(#Physics)(#eduvictors)

Physicists and Their Major Contributions

For Class 11/Class 12 Physics - NEET - JEE

Physics deals with the study of the basic laws of nature and their manifestation in different phenomena. The basic laws of physics are universal and are applied in widely different contexts and conditions. Physics is a basic discipline in the category of natural sciences which also includes other disciplines like Chemistry and Biology. The word physics comes from a Greek word meaning nature.

Here is a partial list of Physicists and their contributions in various fields of physics.

CBSE Class 11 Biology - The Living World - An Overview of Virus and Viroids (#class11biology)(#viruses)(#viroids)(#eduvictors)

An Overview of Virus and Viroids ( Q & A)

CBSE Class 11 Biology - The Living World 

Q1: Do five kingdom classification include viruses, viroids and lichens?

Answer: Five kingdom system of classification do not includes Virus, Viroids and Lichens.

Q2: What is a virus? What is its structure?

Answer: Viruses are non-cellular organisms having inert crystalline structure outside the living. A virus is a small particle consisting of a nucleic acid core surrounded by a protein coat; in order to reproduce, a virus must infect a living cell.

PHYSICS MCQs FOR NEET - IIT JEE EXAMINATION (SET-5)(#NEETMCQs)(#eduvictors)(#JEE)(#PhysicsMCQs)(#class11Physics)

JEE NEET PHYSICS MCQs (Set-5)

Topics Covered: Laws of Motion, Circular Motion

Q1: In a tug-of-war match, one team is pulling with a force of 500 N. If they are exactly balanced by the other team, then the tension in the rope is?

   (a) 0

   (b) 250 N

   (c) 500 N

   (d) 1000 N

Q2: A particle of mass 0.3 kg is subjected to a force F = kx with k= 15 N/m. What will be its initial acceleration if it is released from a point 20 cm away from the origin.

   (a) 3 m/s² 

   (b) 15 m/s²

   (c) 5m/s² 

   (d) 10 m/s²

PHYSICS MCQs FOR NEET - IIT JEE EXAMINATION (SET-4)(#NEETMCQs)(#eduvictors)(#JEE)(#PhysicsMCQs)(#class11Physics)

JEE NEET PHYSICS MCQs (Set-4)

Topics Covered: Vector Algebra, Motion in a Plane

Q1: If θ is the angle between two vectors, then the resultant vector is maximum when the value of θ is

(a) 0° 

(b) 90°

(c) 180° 

(d) Same in all cases.

Q2: The change in a vector may occur due to

(a) Rotation of the frame of reference 

(b) Translation of frame of reference

(c) Rotation of vector 

(d) Both a and b

Q3: Acceleration of a particle under projectile motion at the highest point of its trajectory is :

(a) g 

(b) zero

(c) less than g 

(d) dependent upon projection velocity

PHYSICS MCQs FOR NEET - IIT JEE EXAMINATION (SET-2)(#NEETMCQs)(#eduvictors)(#JEE)(#PhysicsMCQs)

JEE NEET PHYSICS MCQs (Set-2)

FOR NEET - IIT JEE and Other Engineering or premedical Entrance Examinations

Topics Covered: Units & Dimensions, Error in Measurement

Q1: Which of the following sets cannot enter into the list of fundamental quantities in any system of unit

(a) length, mass and velocity 

(b) length, time and velocity 

(c) mass, time and velocity 

(d) length, time and mass 

Q2: The base quantity among the following is:

(a) Speed 

(b) Weight 

(c) Length 

(d) Area

PHYSICS MCQs FOR NEET - IIT JEE EXAMINATION (SET-1)(#NEETMCQs)(#eduvictors)(#JEE)(#PhysicsMCQs)

PHYSICS MCQs  (SET-1)

FOR NEET - IIT JEE and Other Engineering or premedical Entrance Examinations

Q1: A neutron with velocity v strikes a stationary deuterium atom, its kinetic energy changes by a factor of

(a) 15/16
(b) 1/2
(c) 2/1
(d) 8/9


Q2: AM radio band has carrier frequency from 500 kHz to 1500 kHz. Assuming a fixed inductance in a simple LC circuit, what is  ratio of highest capacitance to lowest capacitance required to cover this frequency range?

(a) 3
(b) 6
(c) 9
(d) 12

CBSE Class 11 Biology - The Living World - Very Short Answer Based Questions(VSQA)(#eduvictors)(#class11Biology)

The Living World - Very Short Answer Based Questions

CBSE Class 11 Biology

Q1: Who is called Father of Biology and Zoology?

Q2: Name the Father of Botany.

Q3: Father of Plant Physiology

Q4: Father of Mycology

CBSE Class 12/NTSE/ - Chemistry - Functions of Catalysts (#class12Chemistry)(AIPMT)(#eduvictors)

Chemistry - Functions of Catalysts

Catalyst, in chemistry, any substance that increases or decreases the rate of a reaction without itself being consumed. Enzymes are bio catalysts i.e. naturally occurring catalysts responsible for many essential biochemical reactions.

Here is a list of catalysts used in various chemical reactions:


1. In Haber’s process for manufacture of ammonia
    Catalyst: Iron powder

Biology Quiz-5 (AIPMT/NEET/CET) (#biologyquiz)(#eduvictors)

Biology Quiz-5 

(AIPMT/NEET/CET)

Multiple Choice Questions

Q1: A particular species of plant produces light, non sticky pollen in large numbers and its stigma are long and feathery. These modifications facilitate pollination by

(a) Insects
(b) Water
(c) Wind
(d) Animals

Physics Quiz for NEET, AIPM and JEE (MCQs) (#physicsquiz)(#eduvictors)

Physics Quiz for NEET, AIPM and JEE 

MCQs

Q1: Wavelength of a LASER beam can be used as a standard of 

(a) Time
(b) Temperature
(c) Angle
(d) Length


Q2: A mercury barometer is enclosed in a tall glass cylinder. What happens to the level of mercury if air is slowly removed from the enclosure by a vacuum pump? The level 

(a) steadily falls
(b) steadily rises
(c) remains unchanged
(d) suddenly falls to zero


Q3: Which of the following is not a thermodynamic function?

(a) enthalpy
(b) work done
(c) internal energy
(d) Gibb's energy

NEET Pre-Medical Biology Quiz: Biomolecules - Set 4 (#NEETQuiz)(#eduvictors)

NEET Biology Quiz: Bio-molecules

(Set -4)

MCQs


Q1: Which of the following is a saturated fatty acid?

(a) Oleic Acid
(b) Linoeic Acid
(c) Archidonic Acid
(d) Palmitic Acid


Q2: Essential amino acids include

(a) leucine
(b) valine
(c) tryptophan
(d) all of these



Q3: Many elements are found in living organisms either free or in the form of compounds. One of the following is not found in living organisms.

(a) Silicon
(b) Magnesium
(c) Iron
(d) Sodium

AIPMT/NEET - Biology Quiz (#neetbiomcqs)(#eduvictors)

AIPMT/NEET - Biology Quiz 

Honey Bee
(credits: Sandeep Handa)

Multiple Choice Questions

Q1: Which of the following structure is not found in bryophytes?
(a) A cellulose cell wall
(b) Chloroplast
(c) Sporangium
(d) Root


Q2: Which of the following statement about Bryophytes is/are incorrect?

(a) They lack xylem and phloem.
(b) The cell walls of their water conducting cells are lignified.
(c) They exhibit alternating heteromorphic generations.
(d) The sporophyte is usually nutritionally dependent on the gametophyte.


Q3: Which of the following is responsible for peat formation? (AIPMT 2014)
(a) Marchantia
(b) Riccia
(c) Funaria
(d) Sphagnum

CBSE Class 12 - Chemistry - Chapter 15: Polymers - Very Short Question Answers (#cbsenotes)(#eduvictors)

Chapter 15: Polymers :Very Short Question Answers 

Q1: Define polymer.

Answer: A polymer may be defined as a high molecular weight compound formed by the combination of a large number of one or more types of small molecular weight compounds.

Q2: Based on the source, how polymers are classified?

Answer:
① Natural: Found in plants and animals, e.g. Proteins, cellulose, natural rubber, silk, wool.
② Synthetic: Man-made e.g. Nylon, polyester, neoprene, Bakelite, Teflon, PVC, polystyrene.


Q3: Based on structures, what are the three categories of polymers.

Answer:
① Linear Polymers
② Branched Polymers


Q4: Name a natural elastomer. 

Answer: Natural rubber.


Q5: Write the name of a synthetic polymer which is an ester. 

Answer: Nylon 6 or Nylon 6,6.

Class 9 - 12 - Biology - Know About Disease - Brief Notes About AIDS (#cbsenotes)(#eduvictors)

AIDS(A Brief Introduction)

Meaning of AIDS

✤ The word AIDS stands for Acquired Immuno Deficiency Syndrome. This means a deficiency of the immune system, acquired during the lifetime of an individual indicating that it is not a congenital disease [disease or abnormality present from birth]. ‘Syndrome’ means a group of symptoms.


✤ AIDS was first reported in 1981 and in the last twenty-five years or so, it has spread all over the world.

✤ Luc Montagnier, Françoise Barré-Sinoussi, and their colleagues at the Pasteur Institute in Paris were the first to report the discovery of the virus now called the human immunodeficiency virus (HIV) associated with AIDS.


Causes of AIDS

CBSE Class 12 - 9 - How Good Your are in Physics? - Simple Physics Quiz (1 Word Answers)(#cbsenotes)(#eduvictors)(#physicsquiz)

Physics Quiz (1 Word Answer)

Q1: Who firstly demonstrated experimentally the existence of electromagnetic wave?

Q2: The working of the quartz crystal in the watch is based on which effect?

Q3: What is the unit of Radioactivity?

Q4: What is the wavelength of the visible spectrum?

Q5: One astronomical unit is the average distance between___?

Q6: Number of basic S.I. units are ___.

Q7: What is the name of the scientist who stated that matter can be converted into energy?

Q8: The size of the atomic nucleus is of the order of___?

Q9: A temperature at which both the Fahrenheit and the centigrade scales have the same value?

AIPMT/ NEET CLASS 12 - BIOLOGY MCQs (#eduvictors)(#cbsenotes)

NEET/ AIPMT/ CET - BIOLOGY MCQs 

1. Unicellular algae, diatoms and protozoans are the members of 

(a) Monera
(b) Fungi
(c) Protista
(d) Plantae

2. Which of the following is also known as ‘amphibian of the plant kingdom’?

(a) Algae
(b) Bryophytes
(c) Pteridophytes
(d) Gymnosperms


3. Yeast is not included in protozoas in fungi because

(a) chlorophyll is absent
(b) it has eukaryotic organisation
(c) cell wall is made up of cellulose and reserve food material as starch
(d) some fungal hyphae grow in such a way that they give the appearance of pseudomycelium


4. An association between roots of higher plants and fungi is called

(a) lichen
(b) fern
(c) mycorrhiza
(d) None of these

CBSE CLASS 12 - Biology - Digestion - Five Digestive Juices (#cbsenotes)(#eduvictors)

Digestion - FIVE DIGESTIVE JUICES

Image credits: LadyOfHats (Wikimedia)

There are five digestive juices i.e.

① Saliva,

② Gastric juice

③ Pancreatic juice

④ Intestinal juice (succus entericus)

⑤ Bile juice

Class 11/12 - Biology - Classification of Plants (#cbsenotes)(#eduvictors)

Biology - Classification of Plants - Herbs, Shrubs and Trees and Other Types

Q1: Based on habit i.e. Based on height, duration and nature of stem, how plants are classified?

Answer:
① Herbs
② Shrubs
③ Trees


Q2: On the basis of On the basis of flowering frequency, how plants are classified?

Answer:
① Monocarpic - These plants flower and fruit only once in their lifetim
② Polycarpic - These plants bear flowers and fruits repeatedly.


Q3: On the basis of life span, how plants are classified?

Answer:

① Annuals
② Biennials
③ Perennials