Kerala Board - Class 10 (Kerala SSLC Board Exam) previous year questions (PYQ)

Refer to the Case Study 'Case Study: The Chlor-Alkali Electrochemical Process in Chemical Industry' to answer:

During the chlor-alkali process, which chemical product is evolved at the positively charged anode?

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

Creative Writing: What is the proper closing subscription for 'അലോഹ സംയുക്തങ്ങൾ (Compounds of Non-metals - Ammonia, Fountain Experiment, Sulphuric Acid)' in a personal letter?

[SAT] What is the commercial unit of electrical energy consumed in Indian households?

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

Assertion (A): Alveoli in the human lungs are richly supplied with extensive capillary networks.

Reason (R): Dense capillary networks maximize the surface area and provide thin diffusion barriers for rapid gas exchange of $O_2$ and $CO_2$.

കേരള പാഠാവലി (LSS / പ്രൈമറി തലം): 'സമാസങ്ങൾ (തത്പുരുഷൻ, ബഹുവ്രീഹി, ദ്വന്ദ്വൻ, കർമ്മധാരയൻ)' കവിത അല്ലെങ്കിൽ കഥ നൽകുന്ന സന്ദേശം എന്താണ്?

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

Assertion (A): Electric current in a conductor is treated as a scalar physical quantity.

Reason (R): Although electric current has both magnitude and direction, it does not obey the laws of vector addition.

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 convex mirror is commonly used as a driver's rear-view mirror in automobiles.

Reason (R): A convex mirror always forms an erect, virtual, and diminished image, providing a much wider field of view.

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 convex mirror is commonly used as a driver's rear-view mirror in automobiles.

Reason (R): A convex mirror always forms an erect, virtual, and diminished image, providing a much wider field of view.

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

Assertion (A): Under the Constitution of India, the judiciary enjoys structural independence from executive and legislative interference.

Reason (R): Judges of the Supreme Court and High Courts have security of tenure and their judicial salaries are charged directly to the Consolidated Fund of India.