4-July-2020

## National Testing Agency has released new exam dates for JEE Main, NEET and JEE Advanced 2020 Exams

Union HRD Minister Shri Ramesh Pokhriyal announced that the Joint Entrance Examination (JEE) Main and National Eligibility-cum-Entrance Test (NEET 2020) will now be held in September. As a consequence, JEE Advanced too stands postponed. The announcement was released based on a report submitted by a panel of experts after considering the prevailing situation of the Covid-19 pandemic.

Now, the JEE Main 2020 Entrance Exam for admission to undergraduate level engineering courses will be held from September 1 to 6 and JEE Advanced 2020 will be held on September 27.

NEET 2020 will now be held on September 13. This is the second time this year that the exams have been postponed. Originally these entrance exams were to be held in April and May, this year respectively.

## India Study Solution MCQ Test Series - Electrostatics | Physics practice questions for JEE, NEET

### India Study Solution Physics Test Series (Prepare and Practice)

NEET, JEE, IIT, AIIMS, NTSE | Engineering, BDS, MBBS Admission Test
Hi Guys,
Welcome back to your own site India Study Solution
Here is your next Set of Questions (Q. No. 11-20) for chapter Electrostatics from Physics with their hints & solutions (given at the end).
(Please scroll down to find Electrostatics syllabus for NEET and JEE).
This is a very important chapter and so, we would request you to please bookmark this site or if you have not subscribed us yet then please subscribe before you forget (it is free) so that you get information whenever we publish more questions on this and other chapter / subject.
Hope it would help you to learn and enhance your confidence while preparing for NEET, JEE (IIT), AIIMS, COMEDK, NEST or any other Medical and Engineering Entrance Exams.
So, friends without wasting time let us start -
Electrostatics
India Study Solution Test Series – Set 2 (Q. No 11-20)
Question 11: An electron is projected with certain velocity into an electric field in a direction opposite to the field. Then it is
a. accelerated
b. retarded
c. neither accelerated nor retarded
d. either accelerated or retarded

Question 12: If the electric potential at a point in free space is 5 x 1011 V, what will be the electric field at that point
a. 4Ï€Îµ0 x 1022 V/m
b. 12Ï€Îµ0 x 1020 V/m
c. 4Ï€Îµ0 x 1020 V/m
d. Nothing can be said

Question 13: In induction the charge induced in the near surface of a dielectric is
a. Equal and dissimilar
b. Greater and dissimilar
c. Lesser and dissimilar
d. Equal and similar

Question 14: Total electric force on an electric dipole placed in an electric field of a point charge is:
a. always zero
b. never zero
c. zero when mid-point of dipole coincides with the point charge
d. zero when dipole axis is along any electric line of force

Question 15: Which of the following is not the unit of charge?
b. coulomb
c. stat coulomb

Question 16: +2C and +6C two charge are repelling each other with a force of 12N. If each charge is given -2C of charge, the value of the force will be
a. 4N (Attractive)
b. 4N (Repulsive)
c. 8N (Repulsive)
d. Zero

Question 17: A point charge +Q is placed at the centroid of an equilateral triangle. When a second charge +Q is placed at a vertex of the triangle, the magnitude of the electrostatic force of the central charge is 8N. The magnitude of the net force on the central charge when a third charge +Q is placed at another vertex of the triangle is:
a. zero
b. 4N
c. 4√2 N
d. 8 N

Question 18: Two parallel plates carry opposite charges such that the electric field in the space between them is in upward direction. An electron is shot in the space and parallel to the plates. Its deflection from the original direction will be
a. Upwards
b. Downwards
c. Circular
d. Elliptical

Question 19: Angle between equipotential surface and lines of force is
a. Zero
b. 1800
c. 900
d. 450

Question 20: Consider the four field patterns shown. Assuming there are no changes in the regions shown, which of the patterns represents a possible electrostatic field:

a. 1
b. 2
c. 3
d. 4

Electrostatics (Syllabus for NEET and JEE): Introduction, Electric Charges and their properties, Frictional Electricity, Charges and their Conservation, Unit of Charge, Conductors and Insulators, Presence of free Charges and bound Charges inside a Conductor, Charging by Induction, Coulomb’s Law, Dielectric Constant,  Forces between Multiple Charges, Electric Field, Electric Field lines, Electric Flux, Electric Dipole, Dipole in a Uniform External Field, Torque on a Dipole in a uniform electric field,  Continuous Charges distribution, Gauss’s Law and its applications, Electrostatic Potential, Potential due to Point Charge / Electric dipole / System of charges, Equipotential Surfaces, Potential Energy of a System of Charges/ External Field,
India Study Solution Test Series
electrostatics
Hints and Solutions of Physics Electrostatics MCQ Test Series – Set 2 (Q. No.11–20)
Hint: Search for the relations of electric potential and electric field at a particular point at any point, electric potential due to charge Q is
(Hint: Electric field of a point charge is non-uniform hence, net force can never be zero)
(Hint: R = √82 + 82 + 2.8.8 cos1200 = 8N)
(Hint: Pattern (1) can be eliminated because field lines cannot simultaneously originate from and converge at a single point; (3) can be eliminated because there are no charges in the region, and so there are no sources of field lines; (4) can be eliminated because electrostatic field lines do not close on themselves).
Electrostatics: Further study

<< Previous (Q.No. 1-10)                                     (Q.No. 21-30)  Next >>

## Alkali and Alkaline Earth Metals: India Study Solution Test Series, Chemistry objective questions for JEE, NEET, other admission tests

### s-Block Elements (Alkali Metals, Alkaline Earth Metals)

India Study Solution Test Series (Chemistry - Confidence Booster)
NEET, JEE IIT, AIIMS, NTSE | Engineering, BDS, MBBS Admission Test
Hi Guys,
Welcome back to your own site India Study Solution
As you are aware that in each set of India Study Solution test series we bring for you another 10 most important questions with their hints & solutions. This post is from our Chemistry Solutions exclusively on Group-I and Group-II elements of Periodic Table.
In each set you will find a combination of typically important some basic with some advanced level questions very helpful for doing online preparation especially for NEET, JEE (IIT) and all other MBBS Admission Tests, Engineering Entrance Exams, NTSE etc.
Many coaching institutes in India are charging thousands of rupees whereas you can get the same benefit in this site sitting at home just free of cost. How’s that !!
Please scroll down to find NEET and JEE syllabus of s-Block elements.
Chemistry Practice Questions: s-Block Elements
(Alkali and Alkaline Earth Metals)
(Group 1 Elements: Alkali Metals; Group 2 Elements: Alkaline Earth Metals)
India Study Solution MCQ Test Series – Set 3 (Q. No 21-30)

Question 21: A substance x is a compound of s-block element, substance X gives a violet colour in flame test, X is:
a. LiCl
b. MgCl
c. BaCl2
d. KCl

Question 22: During electrolysis of fused NaH, product obtained at anode
a. H2
b. O2
c. Na
d. H2O2

Question 23: Potassium carbonate is not prepared by:
a. Solvay process
b. Le-Blanc process
c. Prechts process
d. None of these

Question 24: Caustic soda is:
a. efflorescent
b. deliquescent
c. hygroscopic
d. oxidant

Question 25: Beryllium chloride can easily be hydrolysed, this is because
a. BeCl2 is covalent in nature
b. BeCl2 is ionic in nature
c. It has higher value of hydration energy due to smaller size of Be+2
d. It has higher value of hydration and lattice energy

Question 26: Sodium and potassium react with water much more vigorously than lithium because:
a. sodium and potassium have high values of hydration energy as compared to that of lithium
b. sodium and potassium have higher melting point than that of lithium
c. sodium and potassium have lower melting point than that of lithium
d. sodium and potassium have lower hydration energy than that of lithium

Question 27: Alkaline earth metals show:
a. divalency
b. monovalency
c. variable valency
d. zero valency

Question 28: Which one of the following compounds is a peroxide?
a. NO2
b. KO2
c. BaO2
d. MnO2

Question 29: Plaster of Paris hardens by:
a. giving off CO2
b. utilising water
c. changing into CaCO3
d. giving out water

Question 30: A is a s-block element and on reaction with nitrogen, it gives an ionic compound B. compound C and D is formed when B reacts with water. Solution of C becomes milky when CO2 is passed through it then in the above sequence of reaction, A and D are respectively
a. Ca, Ca(OH)2
b. Li, Ca(OH)2
c. Ca3N2, NH3
d. Ca, NH3

s-Block Elements / Alkali and Alkaline Earth Metals (NEET / JEE syllabus):
General characteristics, electronic configuration, occurrence, anomalous properties of the first element of each group, diagonal relationship, trends in the variation of properties (such as ionization enthalpy, atomic and ionic radii), trends in chemical reactivity with oxygen, water, hydrogen and halogens; uses of the compounds of Group I Elements (Alkali Metals) and Group II Elements (Alkaline Earth Metals). Preparation and Properties of Some important Compounds: sodium carbonate, sodium chloride, sodium hydroxide and sodium hydrogen carbonate, biological importance of sodium and potassium. Anomalous behaviour of beryllium. Industrial use lime and limestone, biological importance of Mg and Ca.
>>>>> <<<<<
India Study Solution - Hints and Solutions Chemistry MCQ Test Series
Alkali and Alkaline Earth Metals (s-Block Elements)
(Group 1 Elements: Alkali Metals; Group 2 Elements: Alkaline Earth Metals)
Solutions of Chemistry Test Series (MCQ) – Set 3 (Q. No.21–30)
Answer 21: d (Hint: In the flame test of KCl gives violet colour).
Answer 26: c (Hint: When sodium and potassium react with water, the heat evolved causes them to melt, giving a larger area of contact with water, lithium on the other hand, does not melt under these condition and thus reacts more slowly. Melting points of Li, Na, and K are 180, 98 and 64 (0C) respectively).
s-Block Elements (Alkali and Alkaline Earth Metals)
More questions to follow

(Q.No. 11-20)           (Q.No. 31-40) Next >>

## Electrostatics : India Study Solution Test Series, solved Physics objective questions for JEE, NEET, other admission tests

### Physics - Electrostatics

India Study Solution Physics Test Series (Confidence Booster)
NEET, JEE, IIT, AIIMS, NTSE | Engineering, BDS, MBBS Admission Test
Hi Guys,
Welcome back to your own site India Study Solution
From today we are starting a new chapter Electrostatics from Physics which will have 30 sets of test series, each set containing 10 most important MCQ questions with their hints & solutions (given at the end).
(Please scroll down to find Electrostatics syllabus for NEET and JEE).
This is a very important chapter and so Friends, we would ask you to please bookmark this site or if you have not subscribed us yet then please subscribe before you forget (it is free) so that you get information whenever we publish more questions on this and other chapter / subject.
Hope it would help you to learn and enhance your confidence while preparing for NEET, JEE (IIT), AIIMS, COMEDK, NEST or any other Medical and Engineering Entrance Exams.
So, friends without wasting time let us start -

Electrostatics
India Study Solution Test Series – Set 1 (Q. No 1-10)
Question 1: A total charge Q is broken in two parts Q1 and Q2 and they are placed at a distance R from each other. The maximum force of repulsion between them will occur, when

Question 2: When the separation between two charges is increased, the electric potential energy of the charges
a. increases
b. decreases
c. remains the same
d. may increase or decrease

Question 3: Three charges +4q, -q and +4q are kept on a straight line at position (0, 0, 0), (a, 0, 0) and (2a, 0, 0) respectively. Considering that they are free to move along the x-axis only
a. all the charges are in stable equilibrium
b. all the charges are in unstable equilibrium
c. only the middle charge is in stable equilibrium
d. only the middle charge is in unstable equilibrium

Question 4: A soap bubble is given a negative charge, then its radius:
a. decreases
b. increases
c. remains unchanged
d. nothing can predicted as information is insufficient

Question 5: When a soap bubble is charged it
a. Bursts
b. Does not undergo any charge
c. Expands
d. Contracts

Question 6: Due to the motion of a charge, its magnitude
a. changes
b. does not change
c. increase (or) decreases depends on its speed
d. cannot be predicted

Question 7: Charges +q and –q are placed at points A and B respectively which are a distance 2 L apart, C is the midpoint between A and B. The work done in moving a charge +Q along the semicircle CRD is:

Question 8: Static electricity is produced by
a. Friction only
b. Induction only
c. Friction and induction both
d. Chemical reaction only

Question 9: A simple pendulum of period T has a metal bob which is negatively charged. If it is allowed to oscillate above a positively charged metal plate, its period will be
a. Remains equal to T
b. Less than T
c. Greater than T
d. Infinite

Question 10: If a positive charge is shifted from a low-potential region to a high –potential region, the electric potential energy
a. increases
b. decreases
c. remains the same
d. may increase or decrease

Electrostatics (Syllabus for NEET and JEE): Introduction, Electric Charges and their properties, Frictional Electricity, Charges and their Conservation, Unit of Charge, Conductors and Insulators, Presence of free Charges and bound Charges inside a Conductor, Charging by Induction, Coulomb’s Law, Dielectric Constant,  Forces between Multiple Charges, Electric Field, Electric Field lines, Electric Flux, Electric Dipole, Dipole in a Uniform External Field, Torque on a Dipole in a uniform electric field,  Continuous Charges distribution, Gauss’s Law and its applications, Electrostatic Potential, Potential due to Point Charge / Electric dipole / System of charges, Equipotential Surfaces, Potential Energy of a System of Charges/ External Field,
India Study Solution Test Series
electrostatics
Hints and Solutions of Physics Electrostatics MCQ Test Series – Set 1 (Q. No.1–10)

Answer 4: b (Hint: On the surface of bubble same charge will distribute, so there is repulsion of charges so radius of bubble increases).