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Search Class 10 Questions

25 results found for "earthquake basics" in Class 10.

लिस्बन भूकंप किस वर्ष की प्रसिद्ध आपदा थी?

The Lisbon earthquake was a famous disaster of which year?

Explanation opens after your attempt
Correct Answer

B. सत्रह सौ पचपन1755

Step 1

Concept

The Lisbon earthquake was a major disaster of 1755. For exams connect it with European history and natural disaster.

Step 2

Why this answer is correct

The correct answer is B. सत्रह सौ पचपन / 1755. The Lisbon earthquake was a major disaster of 1755. For exams connect it with European history and natural disaster.

Step 3

Exam Tip

लिस्बन भूकंप सत्रह सौ पचपन की बड़ी आपदा थी। परीक्षा में इसे यूरोपीय इतिहास और प्राकृतिक आपदा से जोड़ें।

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भारत के किस भौतिक भाग में भूकंपीय गतिविधि अधिक देखी जाती है?

In which physical part of India is seismic activity more commonly observed?

Explanation opens after your attempt
Correct Answer

A. हिमालयी क्षेत्रHimalayan Region

Step 1

Concept

The Himalayas are young fold mountains so seismic activity is relatively higher there. For exams remember the link between young mountains and earthquakes.

Step 2

Why this answer is correct

The correct answer is A. हिमालयी क्षेत्र / Himalayan Region. The Himalayas are young fold mountains so seismic activity is relatively higher there. For exams remember the link between young mountains and earthquakes.

Step 3

Exam Tip

हिमालय युवा वलित पर्वत हैं इसलिए यहां भूकंपीय गतिविधि अपेक्षाकृत अधिक होती है। परीक्षा में युवा पर्वत और भूकंप संबंध याद रखें।

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कला के तत्वों का सही उपयोग किसे बेहतर बनाता है?

Correct use of elements of art improves what?

Explanation opens after your attempt
Correct Answer

A. दृश्य रचनाVisual composition

Step 1

Concept

Elements of art make visual composition clear and attractive. Exam tip: treat elements as the base of composition.

Step 2

Why this answer is correct

The correct answer is A. दृश्य रचना / Visual composition. Elements of art make visual composition clear and attractive. Exam tip: treat elements as the base of composition.

Step 3

Exam Tip

कला तत्व दृश्य रचना को स्पष्ट और आकर्षक बनाते हैं। परीक्षा में elements को composition की नींव मानें।

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कला के तत्व किसके निर्माण की आधार भाषा हैं?

The elements of art are the basic language for making what?

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Correct Answer

A. दृश्य रचनाVisual composition

Step 1

Concept

Visual composition is made through art elements. Exam tip: understand elements as art language.

Step 2

Why this answer is correct

The correct answer is A. दृश्य रचना / Visual composition. Visual composition is made through art elements. Exam tip: understand elements as art language.

Step 3

Exam Tip

कला तत्वों से दृश्य रचना बनती है। परीक्षा में elements को art language समझें।

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किसी समांतर श्रेढ़ी में सार्व अंतर (d) किससे निकाला जाता है?

In an arithmetic progression, how is the common difference (d) found?

Explanation opens after your attempt
Correct Answer

A. \(d=a_2-a_1\)

Step 1

Concept

The common difference is the difference between two consecutive terms. Hence \(d=a_2-a_1\) is correct.

Step 2

Why this answer is correct

The correct answer is A. \(d=a_2-a_1\). The common difference is the difference between two consecutive terms. Hence \(d=a_2-a_1\) is correct.

Step 3

Exam Tip

सार्व अंतर लगातार दो पदों का अंतर होता है। इसलिए \(d=a_2-a_1\) सही है।

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कौन-सा बहुपद (x) में (0) घात का है?

Which polynomial in (x) has degree (0)?

Explanation opens after your attempt
Correct Answer

A. (12)

Step 1

Concept

The number (12) is a non-zero constant polynomial and its degree is (0). The degree of the zero polynomial is undefined.

Step 2

Why this answer is correct

The correct answer is A. (12). The number (12) is a non-zero constant polynomial and its degree is (0). The degree of the zero polynomial is undefined.

Step 3

Exam Tip

(12) शून्य से भिन्न स्थिर बहुपद है और इसकी घात (0) है। (0) बहुपद की घात परिभाषित नहीं होती।

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कौन-सा व्यंजक (x) में बहुपद है?

Which expression is a polynomial in (x)?

Explanation opens after your attempt
Correct Answer

B. \(x^2+\frac{1}{3}x+2\)

Step 1

Concept

In \(x^2+\frac{1}{3}x+2\), the powers of (x) are (2), (1), and (0). So it is a polynomial.

Step 2

Why this answer is correct

The correct answer is B. \(x^2+\frac{1}{3}x+2\). In \(x^2+\frac{1}{3}x+2\), the powers of (x) are (2), (1), and (0). So it is a polynomial.

Step 3

Exam Tip

\(x^2+\frac{1}{3}x+2\) में (x) की घातें (2), (1) और (0) हैं। इसलिए यह बहुपद है।

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कौन-सा कथन (p(x)=0) के लिए सही है?

Which statement is correct for (p(x)=0)?

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Correct Answer

A. यह शून्य बहुपद हैIt is the zero polynomial

Step 1

Concept

(p(x)=0) is called the zero polynomial. Its degree is undefined.

Step 2

Why this answer is correct

The correct answer is A. यह शून्य बहुपद है / It is the zero polynomial. (p(x)=0) is called the zero polynomial. Its degree is undefined.

Step 3

Exam Tip

(p(x)=0) को शून्य बहुपद कहते हैं। इसकी घात परिभाषित नहीं होती।

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बहुपद (p(x)=3x-2+4x+5) में कुल कितने गुणांक हैं जब इसे \(ax^2+bx+c\) रूप में देखें?

How many coefficients are there in (p(x)=3x-2+4x+5) when viewed as \(ax^2+bx+c\)?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

In \(ax^2+bx+c\), there are three coefficients (a), (b), and (c). Here they are (3), (4), and (5).

Step 2

Why this answer is correct

The correct answer is C. (3). In \(ax^2+bx+c\), there are three coefficients (a), (b), and (c). Here they are (3), (4), and (5).

Step 3

Exam Tip

\(ax^2+bx+c\) में (a), (b) और (c) तीन गुणांक होते हैं। यहाँ वे (3), (4) और (5) हैं।

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कौन-सा बहुपद स्थिर बहुपद है?

Which polynomial is a constant polynomial?

Explanation opens after your attempt
Correct Answer

C. \(-7\)

Step 1

Concept

A constant polynomial has no variable. The number (-7) is a non-zero constant polynomial.

Step 2

Why this answer is correct

The correct answer is C. \(-7\). A constant polynomial has no variable. The number (-7) is a non-zero constant polynomial.

Step 3

Exam Tip

स्थिर बहुपद में चर नहीं होता। (-7) शून्य से भिन्न स्थिर बहुपद है।

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\(\frac{x^2+1}{2}\) के बारे में कौन-सा कथन सही है?

Which statement is correct about \(\frac{x^2+1}{2}\)?

Explanation opens after your attempt
Correct Answer

A. यह बहुपद हैIt is a polynomial

Step 1

Concept

\(\frac{x^2+1}{2}=\frac{1}{2}x^2+\frac{1}{2}\) and the coefficients are real. So it is a polynomial.

Step 2

Why this answer is correct

The correct answer is A. यह बहुपद है / It is a polynomial. \(\frac{x^2+1}{2}=\frac{1}{2}x^2+\frac{1}{2}\) and the coefficients are real. So it is a polynomial.

Step 3

Exam Tip

\(\frac{x^2+1}{2}=\frac{1}{2}x^2+\frac{1}{2}\) है और गुणांक वास्तविक हैं। इसलिए यह बहुपद है।

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बहुपद (p(t)=8t-2-3t+4) में चर कौन-सा है?

Which is the variable in the polynomial (p(t)=8t-2-3t+4)?

Explanation opens after your attempt
Correct Answer

B. (t)

Step 1

Concept

In (p(t)), the changing symbol is (t). So the variable is (t).

Step 2

Why this answer is correct

The correct answer is B. (t). In (p(t)), the changing symbol is (t). So the variable is (t).

Step 3

Exam Tip

(p(t)) में बदलने वाला चिन्ह (t) है। इसलिए चर (t) है।

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बहुपद (p(x)=x-2-5x+6) के लिए (p(2)) का मान क्या है?

For (p(x)=x-2-5x+6), what is the value of (p(2))?

Explanation opens after your attempt
Correct Answer

A. (0)

Step 1

Concept

(p(2)=22-5(2)+6=0). In exams, keep the sign of the negative term carefully.

Step 2

Why this answer is correct

The correct answer is A. (0). (p(2)=22-5(2)+6=0). In exams, keep the sign of the negative term carefully.

Step 3

Exam Tip

(p(2)=22-5(2)+6=0)। परीक्षा में ऋणात्मक पद का चिह्न ध्यान से रखें।

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स्थिर बहुपद (p(x)=9) की घात क्या है?

What is the degree of the constant polynomial (p(x)=9)?

Explanation opens after your attempt
Correct Answer

A. (0)

Step 1

Concept

A non-zero constant polynomial has degree (0). The number (9) may be written as \(9x^0\).

Step 2

Why this answer is correct

The correct answer is A. (0). A non-zero constant polynomial has degree (0). The number (9) may be written as \(9x^0\).

Step 3

Exam Tip

शून्य से भिन्न स्थिर बहुपद की घात (0) होती है। (9) को \(9x^0\) माना जा सकता है।

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बहुपद \(7x^2+5x-11\) में स्थिर पद क्या है?

What is the constant term in the polynomial \(7x^2+5x-11\)?

Explanation opens after your attempt
Correct Answer

C. \(-11\)

Step 1

Concept

The constant term is the term without (x). Here the constant term is (-11).

Step 2

Why this answer is correct

The correct answer is C. \(-11\). The constant term is the term without (x). Here the constant term is (-11).

Step 3

Exam Tip

स्थिर पद वह होता है जिसमें (x) नहीं होता। यहाँ स्थिर पद (-11) है।

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यदि \(3^{x+2}=243\) है तो (x) का मान क्या है?

If \(3^{x+2}=243\), what is the value of (x)?

Explanation opens after your attempt
Correct Answer

B. (3)

Step 1

Concept

Since \(243=3^5\), (x+2=5). This gives (x=3).

Step 2

Why this answer is correct

The correct answer is B. (3). Since \(243=3^5\), (x+2=5). This gives (x=3).

Step 3

Exam Tip

क्योंकि \(243=3^5\), इसलिए (x+2=5) है। इससे (x=3) मिलता है।

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यदि \(2^{x+1}=64\) है तो (x) का मान क्या है?

If \(2^{x+1}=64\), what is the value of (x)?

Explanation opens after your attempt
Correct Answer

B. (5)

Step 1

Concept

Since \(64=2^6\), (x+1=6). This gives (x=5).

Step 2

Why this answer is correct

The correct answer is B. (5). Since \(64=2^6\), (x+1=6). This gives (x=5).

Step 3

Exam Tip

क्योंकि \(64=2^6\), इसलिए (x+1=6) है। इससे (x=5) मिलता है।

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यदि \(2^x=32\) है तो (x) का मान क्या है?

If \(2^x=32\), what is the value of (x)?

Explanation opens after your attempt
Correct Answer

B. (5)

Step 1

Concept

Since \(32=2^5\), \(2^x=2^5\) gives (x=5). Equal bases have equal exponents.

Step 2

Why this answer is correct

The correct answer is B. (5). Since \(32=2^5\), \(2^x=2^5\) gives (x=5). Equal bases have equal exponents.

Step 3

Exam Tip

क्योंकि \(32=2^5\), इसलिए \(2^x=2^5\) से (x=5)। समान आधार होने पर घातें बराबर होती हैं।

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(6x+7y+4) में पदों की संख्या कितनी है?

How many terms are there in (6x+7y+4)?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

The expression has three terms: (6x), (7y), and (4). Identify terms by plus or minus signs.

Step 2

Why this answer is correct

The correct answer is C. (3). The expression has three terms: (6x), (7y), and (4). Identify terms by plus or minus signs.

Step 3

Exam Tip

इस व्यंजक में (6x), (7y) और (4) तीन पद हैं। पदों को जोड़ या घटाव से अलग पहचानें।

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\(3^{-2}\) किसके बराबर है?

What is \(3^{-2}\) equal to?

Explanation opens after your attempt
Correct Answer

A. \(\frac{1}{9}\)

Step 1

Concept

A negative exponent moves the base to the denominator, so \(3^{-2}=\frac{1}{3^2}=\frac{1}{9}\). A negative exponent does not mean a negative answer.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{1}{9}\). A negative exponent moves the base to the denominator, so \(3^{-2}=\frac{1}{3^2}=\frac{1}{9}\). A negative exponent does not mean a negative answer.

Step 3

Exam Tip

ऋणात्मक घात आधार को हर में ले जाती है इसलिए \(3^{-2}=\frac{1}{3^2}=\frac{1}{9}\)। ऋणात्मक घात का अर्थ ऋणात्मक उत्तर नहीं होता।

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(4x+5y+2) में पदों की संख्या कितनी है?

How many terms are there in (4x+5y+2)?

Explanation opens after your attempt
Correct Answer

C. (3)

Step 1

Concept

The expression has three terms: (4x), (5y), and (2). Separate terms by plus or minus signs.

Step 2

Why this answer is correct

The correct answer is C. (3). The expression has three terms: (4x), (5y), and (2). Separate terms by plus or minus signs.

Step 3

Exam Tip

इस व्यंजक में (4x), (5y) और (2) तीन पद हैं। पदों को जोड़ या घटाव से अलग करें।

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\(2^{-3}\) किसके बराबर है?

What is \(2^{-3}\) equal to?

Explanation opens after your attempt
Correct Answer

A. \(\frac{1}{8}\)

Step 1

Concept

A negative exponent moves the base to the denominator, so \(2^{-3}=\frac{1}{2^3}=\frac{1}{8}\). A negative exponent does not mean a negative answer.

Step 2

Why this answer is correct

The correct answer is A. \(\frac{1}{8}\). A negative exponent moves the base to the denominator, so \(2^{-3}=\frac{1}{2^3}=\frac{1}{8}\). A negative exponent does not mean a negative answer.

Step 3

Exam Tip

ऋणात्मक घात में संख्या हर में चली जाती है इसलिए \(2^{-3}=\frac{1}{2^3}=\frac{1}{8}\)। ऋणात्मक घात का अर्थ ऋणात्मक उत्तर नहीं है।

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(2x+3y) में पदों की संख्या कितनी है?

How many terms are there in (2x+3y)?

Explanation opens after your attempt
Correct Answer

B. (2)

Step 1

Concept

In (2x+3y), the two terms are (2x) and (3y). Identify terms by plus or minus signs.

Step 2

Why this answer is correct

The correct answer is B. (2). In (2x+3y), the two terms are (2x) and (3y). Identify terms by plus or minus signs.

Step 3

Exam Tip

(2x+3y) में (2x) और (3y) दो पद हैं। पदों को जोड़ या घटाव के चिह्न से अलग पहचानें।

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कौन सी संख्या परिमेय संख्या है?

Which number is a rational number?

Explanation opens after your attempt
Correct Answer

A. \(\frac{5}{8}\)

Step 1

Concept

\(\frac{5}{8}\) is a ratio of two integers. A rational number can be written as \(\frac{p}{q}\).

Step 2

Why this answer is correct

The correct answer is A. \(\frac{5}{8}\). \(\frac{5}{8}\) is a ratio of two integers. A rational number can be written as \(\frac{p}{q}\).

Step 3

Exam Tip

\(\frac{5}{8}\) दो पूर्णांकों का अनुपात है। परिमेय संख्या को \(\frac{p}{q}\) रूप में लिखा जाता है।

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कौन सा विकल्प (a=5q+r) में (r) का वैध मान नहीं हो सकता?

Which option cannot be a valid value of (r) in (a=5q+r)?

Explanation opens after your attempt
Correct Answer

D. 5

Step 1

Concept

In (a=5q+r), the remainder must satisfy \(0\le r<5\).

Step 2

Why this answer is correct

5 is equal to the divisor, so it cannot be a remainder.

Step 3

Exam Tip

Valid remainders start from 0 and end at one less than the divisor. चरण 1: (a=5q+r) में शेषफल की सीमा \(0\le r<5\) है। चरण 2: 5 भाजक के बराबर है, इसलिए यह शेषफल नहीं हो सकता। चरण 3: वैध शेषफल 0 से शुरू होता है और भाजक से एक कम पर खत्म होता है।

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