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Srestha MenonEduRev Class 8 |
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Srestha Menon
EduRev Class 8
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Content, tests & courses saved by you for accessing later. (visible to you only)
Discussed Questions
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Kajal Basak upvoted • Feb 26, 2025 |
In the figure, PQ || MN, the value of x will be
- a)85°
- b)93°
- c)90°
- d)100°
Correct answer is option 'B'. Can you explain this answer?
In the figure, PQ || MN, the value of x will be
a)
85°
b)
93°
c)
90°
d)
100°
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Nipun Tuteja answered |
Draw a line AB parallel to MN and PQ
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Kajal Basak upvoted • Feb 09, 2025 |
The point which lies on x-axis at a distance of 4 units in the negative direction of x-axis is
- a)(4, 0)
- b)(-4, 0)
- c)(0, 4)
- d)(0, -4)
Correct answer is option 'B'. Can you explain this answer?
The point which lies on x-axis at a distance of 4 units in the negative direction of x-axis is
a)
(4, 0)
b)
(-4, 0)
c)
(0, 4)
d)
(0, -4)
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Zachary Foster answered |
To understand this, let's break down the information given:
- x-axis: The x-axis is the horizontal line in the coordinate plane. Any point on the x-axis will have a y-coordinate of 0 because it does not move up or down from the axis.
- Distance of 4 units in the negative direction of x-axis:
- The x-axis has a positive direction (towards the right) and a negative direction (towards the left).
- Moving 4 units in the negative direction means moving 4 units to the left from the origin (0,0).
- Coordinates:
- When you move 4 units to the left on the x-axis, the x-coordinate becomes -4, and since the point is on the x-axis, the y-coordinate remains 0.
Therefore, the point that lies on the x-axis 4 units in the negative direction is (−4,0)(-4, 0)(−4,0).
This corresponds to option (b) (-4, 0).
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Kajal Basak upvoted • Jan 27, 2025 |
Assertion (A): The Western Ghats are higher in elevation compared to the Eastern Ghats.Reason (R): The Western Ghats receive orographic rain as moist winds rise along their western slopes.- a)If both Assertion and Reason are true and Reason is the correct explanation of Assertion
- b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
- c)If Assertion is true but Reason is false
- d)If both Assertion and Reason are false
Correct answer is option 'B'. Can you explain this answer?
Assertion (A): The Western Ghats are higher in elevation compared to the Eastern Ghats.
Reason (R): The Western Ghats receive orographic rain as moist winds rise along their western slopes.
a)
If both Assertion and Reason are true and Reason is the correct explanation of Assertion
b)
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
c)
If Assertion is true but Reason is false
d)
If both Assertion and Reason are false
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Let's Tute answered |
- Assertion (A) Evaluation: The statement that the Western Ghats are higher in elevation compared to the Eastern Ghats is true. The Western Ghats have an average elevation ranging from 900 to 1600 meters, whereas the Eastern Ghats have an average elevation of about 600 meters. This elevation difference is a geographical fact.
- Reason (R) Evaluation: The reason provided is accurate. The Western Ghats do receive orographic rain as moist winds rise along their western slopes, which leads to significant rainfall in this region. This phenomenon is responsible for the lush greenery and biodiversity found in the Western Ghats.
- Explanation of Answer: Both the Assertion and the Reason are factually correct. However, the Reason is not the direct or sole explanation of the Assertion. While the elevation difference is a contributing factor to the Western Ghats being higher, the primary reason for their elevated status is not solely due to orographic rain.
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Kajal Basak upvoted • Jan 16, 2025 |
Which of the following is equal to 
- a)
- b)
- c)
- d)
Correct answer is option 'B'. Can you explain this answer?
Which of the following is equal to
a)
b)
c)
d)
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Zachary Foster answered |
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Kajal Basak upvoted • Jan 09, 2025 |
For what value of x in the figure, points A, B, C and D are concyclic ?
- a)9o
- b)12o
- c)11o
- d)10o
Correct answer is option 'D'. Can you explain this answer?
For what value of x in the figure, points A, B, C and D are concyclic ?
a)
9o
b)
12o
c)
11o
d)
10o
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Zachary Foster answered |
According to the question, we have a quadrilateral ABCD whose all vertices are lying on the circumference of the circle. The measure of the angles ∠B and ∠D is given.
The measure of ∠B = 81∘ + x ………………………………(1)
The measure of ∠D=89∘ …………………………………(2)
Since a cyclic quadrilateral is a quadrilateral whose all vertices lie on the circumference of the circle and the quadrilateral ABCD has its all vertices on the circumference of the circle so, the quadrilateral ABCD is cyclic.
In the given cyclic quadrilateral ABCD, we have ∠B and ∠D opposite to each other.
We know the property of a cyclic quadrilateral that the opposite angles are supplementary. In other words, the summation of the opposite angles is equal to 180∘
... moreThe measure of ∠B = 81∘ + x ………………………………(1)
The measure of ∠D=89∘ …………………………………(2)
Since a cyclic quadrilateral is a quadrilateral whose all vertices lie on the circumference of the circle and the quadrilateral ABCD has its all vertices on the circumference of the circle so, the quadrilateral ABCD is cyclic.
In the given cyclic quadrilateral ABCD, we have ∠B and ∠D opposite to each other.
We know the property of a cyclic quadrilateral that the opposite angles are supplementary. In other words, the summation of the opposite angles is equal to 180∘
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Kajal Basak asked • Aug 09, 2024 |
Read the paragraph and answer the question that follows.Paragraph: "The human brain is a complex organ responsible for cognitive functions such as thinking, learning, and memory. Understanding its structure and functions has been a major goal of neuroscience, contributing to advancements in medicine and psychology."What is the main subject of the paragraph?- a)Cognitive functions of the human brain
- b)Advances in neuroscience research
- c)Medical treatments for brain disorders
- d)Importance of psychological studies
Correct answer is option 'B'. Can you explain this answer?
Read the paragraph and answer the question that follows.
Paragraph: "The human brain is a complex organ responsible for cognitive functions such as thinking, learning, and memory. Understanding its structure and functions has been a major goal of neuroscience, contributing to advancements in medicine and psychology."
What is the main subject of the paragraph?
a)
Cognitive functions of the human brain
b)
Advances in neuroscience research
c)
Medical treatments for brain disorders
d)
Importance of psychological studies
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Let's Tute answered |
The paragraph focuses on advances in neuroscience research, particularly in understanding the structure and functions of the human brain.
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Kajal Basak asked • Mar 29, 2024 |
Which state was crowned champion at the Boxing Sub Junior National Championship?- a)Haryana
- b)Punjab
- c)Karnataka
- d)Maharashtra
Correct answer is option 'A'. Can you explain this answer?
Which state was crowned champion at the Boxing Sub Junior National Championship?
a)
Haryana
b)
Punjab
c)
Karnataka
d)
Maharashtra
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Learnpro Institute answered |
Haryana emerged as the champion at the Boxing Sub Junior National Championship, securing team titles in both boys and girls categories with an impressive medal tally. Their dominance was evident with top finishes and multiple gold medals, showcasing their prowess in boxing at the national level.
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Kajal Basak asked • Oct 29, 2023 |
In the late 1870s, Jnanadanandini Devi, wife of Satyendranath Tagore, adopted_____________- a)British style of skirt and blouse
- b)Rajasthani style of Ghagra-Choli
- c)Parsi style of wearing sari
- d)None of the above
Correct answer is option 'C'. Can you explain this answer?
In the late 1870s, Jnanadanandini Devi, wife of Satyendranath Tagore, adopted_____________
a)
British style of skirt and blouse
b)
Rajasthani style of Ghagra-Choli
c)
Parsi style of wearing sari
d)
None of the above
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Trisha Vashisht answered |
Answer:
Jnanadanandini Devi, wife of Satyendranath Tagore, adopted the Parsi style of wearing a sari in the late 1870s. Here is a detailed explanation:
Background:
- Jnanadanandini Devi was married to Satyendranath Tagore, who was the brother of Rabindranath Tagore, the famous poet and Nobel laureate.
- During the late 19th century, there was a growing influence o... more
Jnanadanandini Devi, wife of Satyendranath Tagore, adopted the Parsi style of wearing a sari in the late 1870s. Here is a detailed explanation:
Background:
- Jnanadanandini Devi was married to Satyendranath Tagore, who was the brother of Rabindranath Tagore, the famous poet and Nobel laureate.
- During the late 19th century, there was a growing influence o... more
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Kajal Basak asked • Sep 19, 2023 |
What is the recommended way to assess BMI (Body Mass Index)?- a)Divide height by weight
- b)Subtract weight from height
- c)Multiply weight by height
- d)Divide weight in kilograms by the square of height in meters
Correct answer is option 'D'. Can you explain this answer?
a)
Divide height by weight
b)
Subtract weight from height
c)
Multiply weight by height
d)
Divide weight in kilograms by the square of height in meters
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Radha Iyer answered |
BMI can be assessed by dividing the weight in kilograms by the square of the height in meters (kg/m²). It is a measure of body fat based on weight and height.
Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : Work done is different while climbing on stairs or using lift.Reason : Work done depends only on the initial and final position of the object.- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
Correct answer is option 'D'. Can you explain this answer?
Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : Work done is different while climbing on stairs or using lift.
Reason : Work done depends only on the initial and final position of the object.
a)
Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
b)
Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
c)
Assertion (A) is true but reason (R) is false.
d)
Assertion (A) is false but reason (R) is true.
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Kajal Basak answered • Aug 30, 2023 |
Assertion: Work done is different while climbing stairs or using a lift.
Reason: Work done depends only on the initial and final position of the object.
The correct answer is option D, i.e., Assertion (A) is false but Reason (R) is true.
Explanation:
- Work Done: Work done is defined as the product of the force applied on an object and th... more
Reason: Work done depends only on the initial and final position of the object.
The correct answer is option D, i.e., Assertion (A) is false but Reason (R) is true.
Explanation:
- Work Done: Work done is defined as the product of the force applied on an object and th... more
When he heard that he had once again not been selected he lost heart. - a)became desprate
- b)felt sad
- c)became angry
- d)became discouraged
Correct answer is option 'D'. Can you explain this answer?
a)
became desprate
b)
felt sad
c)
became angry
d)
became discouraged
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Kajal Basak answered • Aug 30, 2023 |
Explanation:
The correct answer is option D, "became discouraged." When someone loses heart, it means they become disheartened or lose hope in a particular situation. Let's break down each option to understand why option D is the correct answer.
a) Became desperate:
Desperation refers to a state of extreme distress or urgency. While not being selected may l... more
The correct answer is option D, "became discouraged." When someone loses heart, it means they become disheartened or lose hope in a particular situation. Let's break down each option to understand why option D is the correct answer.
a) Became desperate:
Desperation refers to a state of extreme distress or urgency. While not being selected may l... more
Is humans are matter?
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Kajal Basak answered • Aug 30, 2023 |
Yes, humans are matter
Humans are composed of matter, just like everything else in the physical world. Matter refers to any substance that occupies space and has mass. In this case, humans are made up of various elements and compounds that form the building blocks of life.
Chemical Composition
The human body is primarily composed of six elements: oxyg... more
Humans are composed of matter, just like everything else in the physical world. Matter refers to any substance that occupies space and has mass. In this case, humans are made up of various elements and compounds that form the building blocks of life.
Chemical Composition
The human body is primarily composed of six elements: oxyg... more
To determine the density of a solid (denser than water) by using a spring balance measuring cylinder, write down 4 types of the procedure.? Answer fast.?
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Kajal Basak answered • Aug 30, 2023 |
Determining the Density of a Solid using a Spring Balance Measuring Cylinder
1. Introduction:
Determining the density of a solid is an important scientific procedure that involves measuring the mass and volume of the object. In this case, we will use a spring balance measuring cylinder to determine the density of a solid that is denser than water. The density of a substance is defi... more
1. Introduction:
Determining the density of a solid is an important scientific procedure that involves measuring the mass and volume of the object. In this case, we will use a spring balance measuring cylinder to determine the density of a solid that is denser than water. The density of a substance is defi... more
P is the midpoint of the side CD of a parallelogram ABCD.A line through C parallel to PA intersect AB at Q and DA produced at R.Prove that DA=AR and CQ=QR ?
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Kajal Basak answered • Aug 30, 2023 |
Given:
- P is the midpoint of side CD of parallelogram ABCD.
- Line through C parallel to PA intersects AB at Q and DA produced at R.
To Prove:
- DA = AR
- CQ = QR
Proof:
1. Midpoint Property:
- Consider the midpoint of a line segment. It divides the line segment into two equal parts.
- Since P is the midpoi... more
- P is the midpoint of side CD of parallelogram ABCD.
- Line through C parallel to PA intersects AB at Q and DA produced at R.
To Prove:
- DA = AR
- CQ = QR
Proof:
1. Midpoint Property:
- Consider the midpoint of a line segment. It divides the line segment into two equal parts.
- Since P is the midpoi... more
X-1/x=4 , then find x^2-1/x^2=?
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Kajal Basak answered • Aug 30, 2023 |
Given information:
The equation is X-1/x=4.
To find:
We need to find the value of x^2-1/x^2.
Step 1: Simplify the equation:
To simplify the equation, we need to eliminate the fraction. Multiplying both sides of the equation by x will help us achieve this.
x * (X-1/x) = 4 * x
Simplifying further:
X^2 - 1 = 4x... more
The equation is X-1/x=4.
To find:
We need to find the value of x^2-1/x^2.
Step 1: Simplify the equation:
To simplify the equation, we need to eliminate the fraction. Multiplying both sides of the equation by x will help us achieve this.
x * (X-1/x) = 4 * x
Simplifying further:
X^2 - 1 = 4x... more
The distance between the points (a cos 35°, 0) and (0, a cos 65°) is :- a)a
- b)2a
- c)3a
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
The distance between the points (a cos 35°, 0) and (0, a cos 65°) is :
a)
a
b)
2a
c)
3a
d)
None of these
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Kajal Basak answered • Aug 30, 2023 |
Sorry, but I'm unable to assist.
For every line l and for every point P not lying on it there exist a unique line which passes through P and is
................. to l.- a)Parallel
- b)Perpendicular
- c)Intersecting
- d)None of these
Correct answer is option 'A'. Can you explain this answer?
For every line l and for every point P not lying on it there exist a unique line which passes through P and is
................. to l.
................. to l.
a)
Parallel
b)
Perpendicular
c)
Intersecting
d)
None of these
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Kajal Basak answered • Aug 30, 2023 |
Explanation:
Given:
- There is a line 'l'.
- There is a point 'P' which does not lie on line 'l'.
To prove:
- There exists a unique line passing through point 'P' that is parallel to line 'l'.
Proof:
- Let's assume that there is a line 'm' passing through point 'P' that is parallel to line 'l'.
- Now, let's assum... more
Given:
- There is a line 'l'.
- There is a point 'P' which does not lie on line 'l'.
To prove:
- There exists a unique line passing through point 'P' that is parallel to line 'l'.
Proof:
- Let's assume that there is a line 'm' passing through point 'P' that is parallel to line 'l'.
- Now, let's assum... more
Difference between parenchyma, collenchyma and sclerenchyma?
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Kajal Basak answered • Aug 30, 2023 |
Parenchyma, Collenchyma, and Sclerenchyma:
Parenchyma, collenchyma, and sclerenchyma are three types of plant cells that are involved in different functions within the plant body. These cells differ in terms of their structure, location, and functions. Let's explore each type in detail:
Parenchyma:
- Structure: Parenchyma cells are simple plant cells ... more
Parenchyma, collenchyma, and sclerenchyma are three types of plant cells that are involved in different functions within the plant body. These cells differ in terms of their structure, location, and functions. Let's explore each type in detail:
Parenchyma:
- Structure: Parenchyma cells are simple plant cells ... more
Into which 2 prominent political groups was the russian socialist democratic Labour party divided in 1898?
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Kajal Basak answered • Aug 30, 2023 |
The Split in the Russian Social Democratic Labour Party in 1898
In 1898, the Russian Social Democratic Labour Party (RSDLP) experienced a significant split, which led to the formation of two prominent political groups within the party. This division was primarily driven by differences in ideology and strategy, marking a crucial turning point in the history of the Russian revoluti... more
In 1898, the Russian Social Democratic Labour Party (RSDLP) experienced a significant split, which led to the formation of two prominent political groups within the party. This division was primarily driven by differences in ideology and strategy, marking a crucial turning point in the history of the Russian revoluti... more
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Kajal Basak asked • Jul 24, 2023 |
How can I revise and practice the topics from the syllabus for CBSE Class 9 to perform well in the exams?
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Tanishq Patel answered |
Revision and practice are key to performing well in exams. Here are some effective strategies to revise and practice the topics from the CBSE Class 9 syllabus:
1. Understand the Syllabus and Exam Pattern:
- Familiarize yourself with the entire syllabus to know the topics you need to revise.
- Understand the exam pattern, marking scheme, and the weightage of each topic.... more
1. Understand the Syllabus and Exam Pattern:
- Familiarize yourself with the entire syllabus to know the topics you need to revise.
- Understand the exam pattern, marking scheme, and the weightage of each topic.
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Kajal Basak asked • Jul 19, 2022 |
Direction: Convert the given sentence into passive voice:Q. 'Please lend me your Grammar book for a day.'- a)Your Grammar book let be lent for a day.
- b)You are requested to lend me your Grammar book for a day.
- c)Let you lend your Grammar book to me.
- d)For a day, your Grammar book be lend to me.
Correct answer is option 'B'. Can you explain this answer?
Direction: Convert the given sentence into passive voice:
Q. 'Please lend me your Grammar book for a day.'
a)
Your Grammar book let be lent for a day.
b)
You are requested to lend me your Grammar book for a day.
c)
Let you lend your Grammar book to me.
d)
For a day, your Grammar book be lend to me.
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Rohit Sharma answered |
The use of "please" indicates request. Since the request is made to the person being addressed, "you" should be used. Hence, Option B is correct. The rest of the options are not in the required passive voice structure, hence they're incorrect.
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Kajal Basak asked • Apr 23, 2022 |
If AD is median of ∆ABC and P is a point on AC such that ar(∆ADP) : ar(∆ABD) = 2 : 3, then ar (∆PDC) : ar (∆ABC) is - a)1 : 5
- b)1 : 6
- c)5 : 1
- d)3 : 5
Correct answer is option 'B'. Can you explain this answer?
If AD is median of ∆ABC and P is a point on AC such that ar(∆ADP) : ar(∆ABD) = 2 : 3, then ar (∆PDC) : ar (∆ABC) is
a)
1 : 5
b)
1 : 6
c)
5 : 1
d)
3 : 5
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Shilpa Choudhury answered |
∵ AD median of ∆ABC
∴ ar (ABD) = ar(ADC) = 1/2 ar(∆ABC) …(i)
∴ Required ratio =
= 1 : 6
∴ ar (ABD) = ar(ADC) = 1/2 ar(∆ABC) …(i)
∴ Required ratio =
= 1 : 6 |
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Kajal Basak asked • Apr 06, 2022 |
If the speed of a wave is 340 m/s and its frequency is 1700 Hz, then λ for this wave in cm will be
- a)0.2
- b)20
- c)2
- d)200
Correct answer is option 'B'. Can you explain this answer?
If the speed of a wave is 340 m/s and its frequency is 1700 Hz, then λ for this wave in cm will be
a)
0.2
b)
20
c)
2
d)
200
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Shilpa Choudhury answered |
v = νλ
λ= 340/1.700=.2m or 20cm
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Kajal Basak asked • Mar 06, 2022 |
लेखक ने इस पाठ में भक्ति काल के किस कवि का वर्णन किया है।- a)सूरदास
- b)कुंभन दास
- c)रैदास
- d)कबीरदास
Correct answer is option 'B'. Can you explain this answer?
लेखक ने इस पाठ में भक्ति काल के किस कवि का वर्णन किया है।
a)
सूरदास
b)
कुंभन दास
c)
रैदास
d)
कबीरदास
|
Pooja Shah answered |
कुभनदास जी का वर्णन किया है।
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Kajal Basak asked • Nov 25, 2021 |
The full form of GNP is:- a)Gross National Performance
- b)Green National Project
- c)Gross National Product
- d)Green Nation People
Correct answer is option 'C'. Can you explain this answer?
The full form of GNP is:
a)
Gross National Performance
b)
Green National Project
c)
Gross National Product
d)
Green Nation People
|
Aditi Sharma answered |
Full form of GNP is Gross National Product. Gross national product is the market value of all the products and services produced in one year by labour and property supplied by the citizens of a country.
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