EduNews: Board performance will not be considered for admissions by IITs this year

20-July-2020

The Human Resource Development Ministry on Friday announced relaxation in the admission to Indian Institutes of Technology (IITs) this year by not considering Class XII board performance.

“For admissions to IITs, apart from qualifying the JEE (Advanced), the eligibility was to secure either minimum score of 75 per cent marks in class XII Board exams or rank among the top 20 percentile in their qualifying examinations,” said Ramesh Pokhriyal Nishank, Minister for Human Resource Development.

Due to the partial cancellation of class XII exams by several Boards, Joint Admission Board (JAB) has decided to relax the eligibility criterion for JEE (Advanced) 2020 qualified candidates this time, he added.

Qualified candidates who have passed class XII examinations will now be eligible for admissions irrespective of marks obtained in the board exams.

Meanwhile, the Central Board of Secondary Education on Monday announced the board results of Class XII.

(Source: The Hindu)

Practice Questions Set 3: Organic Chemistry – principles, classification, nomenclature, purification and characterisation of organic compounds

Organic Chemistry – Basic Principles, Classification, IUPAC Nomenclature, Purifications, TECHNIQUES and Characterisation of Organic Compounds

India Study Solution Test Series (Practice Questions)

NEET, JEE Mains, JEE Advanced, NTSE | Engineering, BDS, MBBS Admission Test

Hi Guys,

Welcome back to your own site India Study Solution

India Study Solution test series Set-3: Here you have 10 new practice questions (Q. No. 21 - 30) with their hints & solutions from our Chemistry Solutions on chapter “Organic Chemistry – Basic Principles, Classification, Nomenclature, Purification and Characterisation of Organic Compounds”.

In each set you will find a combination of most important carefully selected basic with some advanced level questions, utmost required for doing online preparation of all MBBS Admission Tests, Engineering Entrance Exams such as NEET, JEE and also many other Admission Tests or competitive exams.

(Link to NEET and JEE syllabus for this chapter).

Friends, believe me ... if you are preparing for any medical (MBBS) or engineering (B.Tech) entrance exam and have still not attempted our previous questions / other sections then you are really missing something very important. So please find links for previous sets at the end or in the drop down menu above and go through them!    

Organic Chemistry  

(Basic Principles, Classification, IUPAC Nomenclature, Isomerism, Purification and Characterisation of Organic Compounds)

India Study Solution Test Series – Set 3 (Q. No 21-30)

Question 21: Steam distillation is applied to those organic compounds which are steam volatile and:

a. soluble in water

b. insoluble in water

c. sparingly soluble in water

d. insoluble in all solvents

Question 22: For the given alkane

The IUPAC name is

a. 1, 1 dimethyl-5-ethyl octane

b. 6-ethyl-2-methyl nonane

c. 4-ethyl-8-methyl nonane

d. 2-methyl-6-propyl octane

Question 23: There are several criteria for purity of organic compounds. Out of these which one is considered best?

a. Melting point

b. Microscopic examination

c. Mixed melting point

d. Colour

Question 24: The order of decreasing reactivity towards an electrophilic reagent, for the following would be

(i) Benzene

(ii) Toluene

(iii) Chlorobenzene

(iv) Phenol

a. (ii) > (iv) > (i) > (iii)

b. (iv) > (iii) > (ii) > (i)

c. (iv) > (ii) > (i) > (iii)

d. (i) > (ii) > (iii) > (iv)

Question 25: A compound which does not give a positive test in Lassaigne’s test for nitrogen is:

a. Urea

b. Hydrazine

c. Phenyl hydrazine

d. Azobenzene

Question 26: Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?

a. –SO₃H

b. -COOH

c. –NO₂

d. –C ≡ N

Question 27: Duma’s method involves the determination of nitrogen content in the organic compound in the form of:

a. NH₃

b. N₂

c. NaCN

d. (NH₄)₂ SO₄

Question 28: Complete combustion of 15 g of any organic compound gave 44 g of CO₂. What is the percentage of carbon in the organic compound?

a. 60

b. 80

c. 40

d. 50

Question 29: Which of the following statement is incorrect:

a. Tollen’s reagent can distinguish propene and propyne

b. Iodoform test can distinguish propanone and ethanal

c. Lucas reagent can distinguish 1-propanol and 2- propanol

d. NaHCO₃ can distinguish phenol and benzoic acid.

Question 30: Schiff’s and Piria method is used for the estimation of:

a. nitrogen

b. sulphur

c. halogens

d. oxygen 

India Study Solution - Hints and Solutions Chemistry MCQ Test Series

Organic Chemistry 

(Basic Principles, Classification, IUPAC Nomenclature, Isomerism, Purification and Characterisation of Organic Compounds)

Hints and Solutions of Organic Chemistry Test Series (MCQ) – Set 3 (Q. No.21–30)

https://www.indiastudysolution.com

Answer 21: b. Answer 22: b. Answer 23: c. Answer 24: c.

Answer 25: b (Hint: For Lassaigne’s test C-N bond must be present).

Answer 26: c. Answer 27: b. Answer 28: b. Answer 29: b. Answer 30: c.

Organic Chemistry: Basic Principles, Classification, IUPAC Nomenclature, Isomerism, Purification and Characterisation of Organic Compounds

 More questions to follow 

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NEET and JEE 2020 latest updates - New Exam Dates announced by NTA

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. 

JEE Main 2020 will be held from July 18-23 while medical entrance test NEET 2020 will be conducted on July 26 and JEE Advanced 2020 is in August

Latest updates 19-Aug-2020

• JEE Main 2020, NEET 2020, JEE Advanced exam dates: SC lawyer requests PMO for postponement
• JEE Main 2020 Admit Card released: Download Hall Ticket from NTA JEE official site

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

Electrostatics

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. 4πε₀ x 10²² V/m

b. 12πε₀ x 10²⁰ V/m

c. 4πε₀ 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?

a. farad

b. coulomb

c. stat coulomb

d. faraday

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)

https://www.indiastudysolution.com

Answer 11: a.

Answer 12: d

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

Answer 13: c.

Answer 14: b

(Hint: Electric field of a point charge is non-uniform hence, net force can never be zero)

Answer 15: a. Answer 16: b.

Answer 17: d

(Hint: R = √8² + 8² + 2.8.8 cos120⁰ = 8N)

Answer 18: b. Answer 19: c.

Answer 20: b

(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

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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)

https://www.indiastudysolution.com

Answer 21: d (Hint: In the flame test of KCl gives violet colour).

Answer 22: a. Answer 23: a. Answer 24: b. Answer 25: c.

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).

Answer 27: a. Answer 28: c. Answer 29: b. Answer 30: d.

 s-Block Elements (Alkali and Alkaline Earth Metals): 
 More questions to follow

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