In 1831, electricity became viable for use in technology when Michael Faraday created the electric dynamo. The correct answer is (C) Michael Faraday. 

Faraday's work on electromagnetic induction laid the foundation for the development of electric generators and dynamos, which played a crucial role in the generation of electric power.

Answer: B) Eleven Explanation: List of fundamental duties of the citizens of India in Article 51A of the Indian Constitution : 1. to abide by the constitution and respect its ideal and institutions; 2. to cherish and follow the noble ideals which inspired our national struggle for freedom; 3. to uphold and protect the sovereignty, unity and integrity of India; 4. to defend the country and render national service when called upon to do so; 5. to promote harmony and the spirit of common brotherhood amongst all the people of India   transcending religious, linguistic and regional diversities, to renounce practices derogatory to the   dignity of women; 6. to value and preserve the rich heritage of our composite culture; 7. to protect and improve the natural environment including forests, lakes, rivers, and wild-life       and to have compassion for living creatures; 8. to develop the scientific temper, humanism and the spirit of inquiry and reform; 9. to safeguard public property and to abjure violence; 10. to strive towards excellence in all spheres of individual and collective activity 11. who is a parent or guardian , to provide opportunities for education to his child, or as the case may be, ward between the age of six and fourteen years.

Mount Everest, the highest peak in the world, is named after Sir George Everest, a Welsh geographer and surveyor general of India in the 19th century. Although Sir George Everest himself objected to having the mountain named after him, the proposal was accepted, and the mountain retained the name Everest. The naming was done by the Royal Geographical Society in 1865 to honor his contributions to the Great Trigonometrical Survey of India, which played a significant role in mapping the subcontinent.