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Showing posts with label AIPMT. Show all posts
Showing posts with label AIPMT. Show all posts

# 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.

# 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

# 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

## 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  (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

## 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

## 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)

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

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

(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 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

 Honey Bee(credits: Sandeep Handa)

Multiple Choice Questions

(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

## 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?

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

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

Linear Polymers
Branched Polymers

Q4: Name a natural elastomer.

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

Answer: Nylon 6 or Nylon 6,6.

## 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

## 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?

## 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

## Digestion - FIVE DIGESTIVE JUICES

There are five digestive juices i.e.

Saliva,

Gastric juice

Pancreatic juice

Intestinal juice (succus entericus)

Bile juice

## 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?

Herbs
Shrubs
Trees

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

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

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

Annuals
Biennials
Perennials

## Class 12 / AIPMT / NEET - Biology MCQs

#### Multiple Choice Questions

Q1: Which of the following is a ‘club moss’ ?

(a) Selaginella
(b) Equisetum
(c) Lycopodium
(d) None of these

Q2: The morphological nature of rhizophore of Selaginella is _______

(a) Root like
(b) Stem like
(c) Both root and stem like
(d) Rhizoid like

Q3: Pinus is a _____

(a) Tree
(b) Shrub
(c) Herb
(d) None of these

## Biology - The Living World - Taxonomical Aids

Q1: What are Taxonomical Aids?

Answer: These are articles helpful in correct identification & classification of organisms are called taxonomical aids.

Q2: What is a Herbarium?

1. The storehouse of collected plant specimens that are dried, pressed & preserved on sheets.
2. Sheets are arranged according to a universally accepted classification system.
3. Used as a ready reference in scientific studies.

## DISCOVERIES IN ATOMIC STRUCTURE

1. Dalton(1803) : Proposed Atomic Theory

2. Julius Plucker (1859) : First discoverer of cathode rays

3. Goldstein(1886) : Discovered anode rays and proton

4. Sir.J.J.Thomson(1897) : Discovered electron and determined charge/mass(e/m) ratio for electron

5. Rutherford(1891) : Discovered nucleus and proposed atomic model