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Practice Test - NEET MCQ


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30 Questions MCQ Test - Practice Test

Practice Test for NEET 2024 is part of NEET preparation. The Practice Test questions and answers have been prepared according to the NEET exam syllabus.The Practice Test MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Practice Test below.
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Practice Test - Question 1

In the formula X = 3YZ2, X and Z have dimensions of capacitance and magnetic induction respectively. What are the dimensions of Y in MKSQ system ?

[JEE-1995,2/100]

Detailed Solution for Practice Test - Question 1

*Multiple options can be correct
Practice Test - Question 2

A body has its centre of mass at the origin. The x-coordinates of the particles

Detailed Solution for Practice Test - Question 2

The y coordinates of the particles of the body may be all non zero and positive for some cases and negative in other cases.

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Practice Test - Question 3

An object comprises of a uniform ring of radius R and its uniform chord AB (not necessarily made of the same material) as shown. Which of the following can not be the centre of mass of the object.

                                

Detailed Solution for Practice Test - Question 3




Since the points must have symmetric coordinates so B is the answer.

*Multiple options can be correct
Practice Test - Question 4

In which of the following cases the centre of mass of a an rod is certainly not at its centre ?

Detailed Solution for Practice Test - Question 4
  1. It can’t be since the integral would yield a value much greater than R/2
  2. It can’t be since the integral would yield a value much less than R/2
  3. Assuming the rate of increase and decrease is same the COM could lie in the centre
  4. Assuming the rate of increase and decrease is same the COM could lie in the centre
     
Practice Test - Question 5

The velocity of a particle moving with simple harmonic motion is____ at the mean position.

Detailed Solution for Practice Test - Question 5

Equation of SHM particle: 
Y=a sinωt
V=aω sinωt
Vmax = aω
So the velocity is maximum at mean position

Practice Test - Question 6

The periodic time (tp) is given by:

Detailed Solution for Practice Test - Question 6

Periodic time is the time taken for one complete revolution of the particle.

∴ Periodic time (tp) = 2 π/ω seconds.

Practice Test - Question 7

A frequency of 1Hz corresponds to:

Detailed Solution for Practice Test - Question 7

Frequency is defined as time taken to perform one oscillation by the object.

Hence, 1Hz corresponds to 1 vibration per sec.

Practice Test - Question 8

The path difference between two wavefronts emitted by coherent sources of wavelength 5460 Å is 2.1 micron . The phase difference between the wavefronts at that point is _

Detailed Solution for Practice Test - Question 8

Practice Test - Question 9

 Monochromatic light is that light in which

Practice Test - Question 10

The level of contamination of chloroform was found to be 15 ppm. It means 15 g of chloroform is present in how many grams of solution?

Detailed Solution for Practice Test - Question 10

1 ppm is equivalent to 1 part out of 1 million (106) parts.
∴ Mass percent of 15 ppm chloroform in water 

⇒ 1.5 x 10-3 g chloroform present in 100 g water
Thus, 15g chloroform will be present in water 

Practice Test - Question 11

Mole fraction of glycerine, C3H5(OH)3 in a solution containing 36 gm of water and 46 gm of glycerine is:

Detailed Solution for Practice Test - Question 11

Molecular mass of glycerine = 92 g
Molecular mass of water = 18 g

No. of moles of glycerine = 46/92 = 0.5 moles
No. of moles of water = 36/18 = 2 moles

Thus, Mole fraction of glycerine = No. of moles of glycerine/(No. of moles of glycerine + No. of moles of water) = 0.5/(2 + 0.5)  = 0.20

Practice Test - Question 12

Calculate the molality of 12.5% w/w sulphuric acid?

Detailed Solution for Practice Test - Question 12

12.5% w/w means 12.5 g in 100 g of solution.

Weight of solvent = 100 g – 12.5 g = 87.5 g.
Number of moles of sulphuric acid = 12.5/ 98 = 0.127 mol

⇒ molality = 0.127 x 1000/87.5 = 1.45 m

Practice Test - Question 13

When the solvent is in solid state, solution is

Detailed Solution for Practice Test - Question 13

When both the solute and solvent are in solid state, then the solution is called a solid solution or solid sol.

Solid Sol includes gems, photochromic glass, alloys, ruby stone, coloured glass, vision glasses, etc.

Practice Test - Question 14

The number of moles of KCl in 3 L of 3 M solution is

Detailed Solution for Practice Test - Question 14

In 3M there will be 3 moles per litre therefore in 3 litres there will be 9 moles.

Practice Test - Question 15

New cells generate from

Detailed Solution for Practice Test - Question 15

All living organisms are composed of cells and products of cells.all cells arise from pre-existing cells.

Practice Test - Question 16

The rod shaped bacteria is called as

Detailed Solution for Practice Test - Question 16

The shapes of bacteria are bacillus (rod like), coccus (spherical), vibrio (comma shaped) and spirillum (spiral).

Practice Test - Question 17

The inner membrane of mitochondria thrown into folds to form finger like structure is called

Detailed Solution for Practice Test - Question 17

Mitochondria are double membranous structure. The inner membrane of mitochondria thrown into folds to form finger-like structureis called cristae.

Practice Test - Question 18

Who was the first to explain that cells divide?

Detailed Solution for Practice Test - Question 18

Rudolf Virchow(1855) first explained that cells divided and new cells are formed .

Practice Test - Question 19

Ribosome are granules formed of

Detailed Solution for Practice Test - Question 19

Ribosomes are granules formed of rRNA and protein. Ribosome provide space for protein synthesis during translation.

Practice Test - Question 20

Who first saw and described a live cell?

Detailed Solution for Practice Test - Question 20

Anton Von Leeuwenhoek first saw and described a live cell.

Practice Test - Question 21

In prokaryotes, the reserved food material is stored in

Detailed Solution for Practice Test - Question 21

Reserve material in prokaryotic cells are stored in the cytoplasm in the form of inclusion bodies.

Practice Test - Question 22

The staining procedure is developed by

Detailed Solution for Practice Test - Question 22

The staining procedure developed by Gram viz., those that take up the gram stain are gram positiveand the others that do not are called gram negative bacteria.

Practice Test - Question 23

Cytoskeleton is made of

Detailed Solution for Practice Test - Question 23

The cytoskeleton of a cell is made up of microtubules, actin filaments,and intermediate filaments. These structures give the cell its shape and help organize the cell’s parts. They also provide a basis for movement and cell division

Practice Test - Question 24

SER differ from RER in

Detailed Solution for Practice Test - Question 24

Smooth endoplasmic reticulum (SER) differ from rough endoplasmic reticulum (RER) in absence of ribosome on the surface of endoplasmic reticulum.

Practice Test - Question 25

The organelle involved in respiration is

Detailed Solution for Practice Test - Question 25

Mitochondria are the sites of aerobic respiration. They producecellular energy in the form of ATP

Practice Test - Question 26

Largest organelles in cell is

Detailed Solution for Practice Test - Question 26

Mitochondria is the largest cell organelles in animal cell and chloroplast is the largest cell organelles in plant cell.

Practice Test - Question 27

Select the incorrect matching

Detailed Solution for Practice Test - Question 27

Mitochondria contain cristae, finger like projection of inner layer, thylakoid is present in chloroplast and lysosome is a digestive enzyme but RNA is absent in Chromosome.

Practice Test - Question 28

Cell organelles with single membrane is

Detailed Solution for Practice Test - Question 28

Lysosomes are single membrane structures containing enzymes for digestion of all types of macromolecules.

Practice Test - Question 29

A cell membrane shows fluid behavior due to

Detailed Solution for Practice Test - Question 29

A cell membrane shows fluid behavior due to mosaic of lipid and proteins. Fluid mosaic model of plasma membrane is most accepted and recent model.

Practice Test - Question 30

Which is common in plant and animal cells

Detailed Solution for Practice Test - Question 30

Mitochondria are present in both plant as well as animal cells. Plastids and central vacuoles are present in plant cells and centrioles are present in only animal cells.

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