Ask & Answer: India's Largest Education Community

Check out tips to start GMAT preparation:

1. Take a mock test.
2. It points out your weak spots in exam sections. This will help you build a smart study plan that focuses your time.
3. Consistent work brings results.

This is a Short Answer Type Questions as classified in NCERT Exemplar

Ans: Conductance of a solution depends upon the number of ions present in the solution since sodium chloride is an ionic compound when mixed in water it ionizes completely forming an aqueous electrolytic solution. Hence, the solution conducts electricity while sugar being a non-electrolyte does not ionize in water and when concentration of NaCl is increased, more Na⁺ and Cl^-  ions will be produced. Hence, conductance increases.

This is a Short Answer Type Questions as classified in NCERT Exemplar

Ans: Conjugate acid and conjugate base can be shown as-

HCl(aq) + H₂O (l) ? H₃O⁺(aq) + Cl^-(aq) 

 acid        base        conjugate    conjugate

                             acid          base

As of now, the KSOU has not released any application deadline for the MBA programmes. However, interested candidates can visit the official website to apply for their course specialisation. Those who are eligible must provide the relevant documents to complete verification. The applications are available on the KSOU's official admission portal.

This is a long answer type question as classified in NCERT Exemplar

It is lithium hydride (LiH) because it has significant covalent character due to the smallest alkali metal, LiH is very stable. It is almost nonreactive towards oxygen and chlorine. It reacts with Al2Cl2 to form lithium aluminium hydride.

8LiH+ Al₂Cl₆ → 2LiAlH₄ → LiCl

Rajagiri College of Social Sciences provides its students with an option to pursue a BSc (Hons) or a BSc (Hons with Research) in Computer Science with Data Analytics. The duration of these courses is four years, which is further divided into eight semesters. The curriculum for both these courses is the same for seven semesters. The course-wise curriculum during the final (eighth) semester is as follows:

This is a long answer type question as classified in NCERT Exemplar

Since, a colourless liquid 'A' contains only hydrogen and oxygen and decomposes slowly on exposure to light but is stabilised by addition of urea, therefore, liquid A may be hydrogen peroxide. A is H₂O₂. 

Structure of H₂O₂ is given below.

Students should look beyond just fees and salary. Key factors include the specialisation offered, curriculum relevance, industry exposure, internship opportunities, faculty expertise, and placement support. The MBA at DIT University stands out for its unique focus on political leadership and government, real-world learning experiences, and strong placement in political and public policy sectors.

This is a Long Answer Type Questions as classified in NCERT Exemplar

Ans: The equation can be written as-

A^p+_x  +  B^q- _y ? xA^p+ (aq) +  yB^q-

S moles of A and B dissolves to give x S moles of A^p+ and y S moles of Bq-.

K_sp = [A^p+]^x  [B^q-]^y = [x5]^x [y5]^y

= x^x y ^y 5 ^x+y

To get admission to NIT Jamshedpur, candidate must have a rank as per the cutoff list according to the category they belong to. The cutoff was released for MSc in Physics, MSc in Mathematics and MSc in Chemistry. Among the General AI category, the round 1 cutoff was between 1088 and 1442. Therefore, to get admission into the college through CCMN irrespective of the branch, candidate must have a rank of 1442 or less. The branch-wise cutoff has been given in the table below:

This is a long answer type question as classified in NCERT Exemplar

Mass of H₂O₂ = 68 g.

Mol. Mass of H₂O₂=34gmol^-1

∴1L of M solution of H₂O₂ will contain H₂O₂=34×5 g

∴2L of 5 M solution will contain H₂O₂=34×5×2=340g

or 200 mL of 5 solution will contain H₂O₂ = $\frac{340}{2000}$ $\times$  200 = 34 g

Now 2H₂O₂ → 2H₂O+O₂

           64 g  32g

Now 68 g of H₂O₂ on decomposition will give O₂=32g

∴34g of H₂O₂ on decomposition will give O₂ = $\frac{34}{68}$ $\times$    34 =16 g

GRE exam is not for students who belong to any specific stream. Graduate Record Examinations is a popular standardized test. It is required for admission to graduate programs. Whether you are planning to pursue PG courses in psychology, economics, or other streams. Many universities accept GRE scores.

This is a Long Answer Type Questions as classified in NCERT Exemplar

Ans: According to Le Chatelier's principle, when we raise the temperature, it shifts the equilibrium to left and decreases the equilibrium concentration of ammonia since it is an exothermic reaction. In other words, low temperature and high pressure is favourable for high yield of ammonia. There will be no change in equilibria on addition of argon (Ar).

This is a Long Answer Type Questions as classified in NCERT Exemplar

Ans: The values of K_c and Q_c are itself sufficient to explain the direction of reaction and less than or greater than one another decides the direction in which reaction will proceed as follows-

(i) As Qc < Kc, the reaction proceeds in the forward direction. 

(ii) If Qc > Kc, the reaction will proceed in the direction of reactants (reverse reaction). 

(iii) If Qc = Kc, no net reaction occurs.

(i) Industrial preparation: H₂O₂ is prepared by the auto-oxidation of 2- alkylanthraquinols

2-ethylanthraquinol ↔ H₂O₂⁺ oxidised product

2Fe₂+ (aq)+2H+ (aq)+H₂O₂ → Fe3 (aq)+2H₂O (l)

PbS (s)+4H₂O₂ (l) → PbSO4 (s)+4H₂O (l)

(ii) Reducing action of hydrogen peroxide 

2MnO₄^-+6H⁺+5H₂O₂→ 2Mn²⁺+8H₂O+5H₂

HOCl+H₂O₂ → H₃O⁺+Cl^-+O₂

Oxidising action of hydrogen peroxide 

2Fe²⁺+H₂O₂→ 2Fe³⁺+2OH^-

Mn²⁺+H₂O₂ → Mn⁴⁺+2OH^-

Acidic properties of H₂O₂

I₂+H₂O₂+2OH^-→ 2I^-+2H₂O+H₂

2MnO₄^-+3H₂O₂→ 2MnO₂+3O₂+2H₂O+2OH^-