Rajasthan Board - Class 10 (Secondary Board Exam) previous year questions (PYQ)

[MAT] If '+' means '$\times$', '-' means '$\div$', '$\times$' means '-', and '$\div$' means '+', what is the value of: $20 + 5 - 10 \div 4 \times 2$?

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): Danger signals on communication towers and traffic posts are always illuminated in red color.

Reason (R): Red light has the longest wavelength in the visible spectrum and suffers minimum Rayleigh scattering ($I \propto 1/\lambda^4$) through fog and smoke.

[SAT] Which layer of the atmosphere contains the ozone layer that absorbs harmful solar ultraviolet (UV) radiation?

Directions: In the following question, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): Thermal power plants are located preferentially near coalfields or railway junctions.

Reason (R): Coal is a heavy, bulky, weight-losing raw material that generates massive ash content, making long-distance rail haulage economically unviable.

गणित (आरबीएसई प्राथमिक बोर्ड): 'त्रिकोणमिति के अनुप्रयोग (ऊंचाई और दूरी के प्रश्न)' संख्या का स्थानीय मान एवं विस्तारित रूप क्या है?

भिन्न एवं दशमलव: 'निर्देशांक ज्यामिति (दूरी सूत्र, विभाजन सूत्र)' समतुल्य भिन्न या दशमलव में बदलने पर क्या मान आएगा?

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): The square root of 2 ($\sqrt{2}$) is an irrational real number.

Reason (R): The square root of any positive prime integer is an irrational number.

[SAT] Which layer of the atmosphere contains the ozone layer that absorbs harmful solar ultraviolet (UV) radiation?

[MAT] A clock shows 8:30. What is the angle between the hour hand and the minute hand?

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): Money serves as an indispensable medium of exchange in modern market economies.

Reason (R): Money eliminates the need for double coincidence of wants inherent in barter trade systems.

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): A concave mirror can form both real inverted images and virtual erect images.

Reason (R): When an object is placed between the pole and focus of a concave mirror, it forms an erect, magnified, virtual image.