# CBSE Class 11 Solved Sample Papers 2019: Physics, Chemistry, Mathematics and Biology

Get the solved sample papers of Physics, Chemistry, Mathematics and Biology for CBSE Class 11 Annual exams. CBSE Sample Papers not only help you to acquaint with the important topics but also give you a preview of the actual question paper which you will face in your Class 11 Exams 2019. CBSE Class 11 students would already have covered most of the syllabus of all subjects. Now it’s time to practice questions based on those topics which they have learnt over the entire year. Solving CBSE Class 11 Sample Papers will not only help to brush your knowledge but also help to learn new ways of managing speed and accuracy in the annual examination 2019. Here, we are providing CBSE Class 11 Solved Sample Papers of Physics, Chemistry, Maths and Biology. To gain maximum benefits from these papers, students should put an honest effort to solve these papers and cross check their answers with the solutions provided in these Sample Papers.

**CBSE Class 11 Syllabus 2018 - 2019: All Subjects**

Some of the key benefits of these CBSE Sample Papers are:

1. Based on the latest CBSE Class 11 syllabus.

2. The paper design is exactly similar to that of Class 11 Annual Exam 2019.

3. Questions are picked from only those topics which are important from exam point of view.

4. Each solution has been provided with a detailed explanation.

**CBSE Class 11 Sample Paper for Mathematics Subject**

Mathematics is one of the most scoring subjects for CBSE Class 11 students. But only remembering formulae will not help you to score high marks. Students will have to understand how to apply formula to solve any question. There are 29 questions in CBSE Class 11 Sample Paper of Maths which are divided into four sections namely A, B, C and D.

**NCERT Solutions for CBSE Class 11 Mathematics: All Chapters**

Few questions from CBSE Class 11 Maths Sample Paper 2019 are given below:

**Question:**

If A = {1, 2, 3, 6}, B = {3, 4, 5, 7} and C = {4, 6, 7, 8}; find A ∪ B ∪ C.

**Solution:**

Given: A = {1, 2, 3, 6}, B = {3, 4, 5, 7} and C = {4, 6, 7, 8}

In union we write all elements of both sets without repeating.

Therefore, A ∪ B ∪ C = {1, 2, 3, 4, 5, 6, 7, 8}

**Question:**

Find the equation of the line that cuts off equal intercepts on the coordinate axes a passes through the point (4, 5).

**Solution:**

Equation of a line in intercept form is

To download the complete sample paper in PDF format, click on the link given below.

**CBSE Class 11 Maths Solved Sample Paper 2019**

**CBSE Sample Paper 2019 for Class 11 Physics**

Physics is an application based subject. Students should try to clear all their basic concepts before attempting any numerical questions. Students can score good marks if they try to understand the concepts instead of rote learning. There are 27 questions in CBSE Class 11 Sample Paper of Physics which are divided into four sections namely A, B, C and D.

**CBSE Class 11 Physics NCERT Solutions: All Chapters**

Few questions from CBSE Class 11 Physics Sample Paper 2019 are given below:

**Question:**

Does short-sightedness (myopia) or long-sightedness (hypermetropia) imply necessarily that the eye has partially lost its ability of accommodation? If not, what might cause these defects of vision?

**Solution:**

No, a myopic or hypermetropic person may have normal ability of accommodation of the eye lens. The partial loss of ability of accommodation of eye lens is called presbyopia. It can be corrected in the way hypermetropia is dealt with.

**Question:**

What are laws of limiting friction?

**Solution:**

The laws of limiting friction are as follows:

(i) The magnitude of the force of limiting friction (F) between any two bodies in contact is directly proportional to the normal reaction (R) between them i.e. F ∝ R.

(ii) The direction of the force of limiting friction is always opposite to the direction in which one body is at the verge of moving over the other.

(iii) The force of limiting friction is independent of the apparent area of contact, as long as the normal reaction between the two bodies in contact remains same.

(iv) The force of limiting friction between any two bodies in contact depends on the nature of material of the surfaces in contact and their roughness or smoothness.

**Download CBSE Class 11 Solved Sample Paper for Physics Subject in PDF format**

**CBSE Sample Paper 2019 for Class 11 Chemistry**

A total of 27 questions will be asked in Chemistry Paper of CBSE Class 11 Annual Exam. Students should try to understand the mechanism of name reactions so that they can attempt the questions correctly in exam.

**Class 11th Chemistry NCERT Solutions: All Chapters**

Few example questions from CBSE Class 11 Chemistry Sample Paper 2019 are given below:

**Question:**

Can phosphorus with outer electronic configuration 3s^{2}3p^{3} form PH_{5}?

**Solution:**

Although phosphorus exhibits +3 and +5 oxidation states, it cannot form PH_{5}. Besides some other considerations, high ∆* _{a }H* value of dihydrogen and ∆

*value of hydrogen do not favour to exhibit the highest oxidation state of P, and consequently the formation of PH*

_{eg }H_{5}.

**Question:**

Write IUPAC names of the following compounds:

(i) (CH_{3})_{3}CCH_{2}C(CH_{3})_{3}

(ii) (CH_{3})_{2}C(C_{2}H_{5})_{2}

(iii) tetra–tert-butylmethane

**Solution:**

(i) 2, 2, 4, 4-Tetramethylpentane

(ii) 3, 3-Dimethylpentane

(iii) 3,3-Di-tert-butyl-2, 2, 4, 4–tetramethylpentane

**Download CBSE Class 11 Solved Sample Paper for Chemistry Subject**

**CBSE Sample Paper 2019 for Class 11 Biology Subject**

Students have to remember a lot of theoretical topics in Biology subject. Scoring good marks in annual exams is not depend on what you have studied but totally depends on how much you can recall in exams. Solving Sample papers is the best way to check your preparedness.

**CBSE Class 11 Biology NCERT Solutions: All Chapters**

Few example questions from CBSE Class 11 Biology Sample Paper 2019 are given below:

**Question:**

What are respiratory substrates? Name the most common respiratory substrate.

**Solution:**

In the process of respiration, those compounds which get oxidised to release energy are called respiratory substrates. The most common respiratory substrate is glucose.

**Question:**

Explain with suitable examples the different types of phyllotaxy?

**Solution:**

Phyllotaxy refers to the pattern or arrangement of leaves on the stem or branch of a plant. There are three types of phyllotaxy which are described as below:

(i) **Alternate phyllotaxy:** In this type of phyllotaxy, a single leaf arises from each node of a branch in alternate manner. For example: Sunflower, mustard, and China rose.

(ii) **Opposite phyllotaxy:** Plants with opposite phyllotaxy have a pair of leaves arising from each node and both lie in opposite direction to each other. For example: Guava and jamun plants.

(iii) **Whorled phyllotaxy:** In this type of phyllotaxy, more than two leaves arise from each node forming a whorl. For example: Alstonia.