Which of the following scientists is credited with the development of the first successful polio vaccine? [#1300]

Jonas Salk developed the inactivated poliovirus vaccine (IPV) in 1955, which was the first effective vaccine against polio. Salk's vaccine led to a significant reduction in polio cases and paved the way for global efforts to eradicate the disease.

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Jonas Salk developed the inactivated poliovirus vaccine (IPV) in 1955, which was the first effective vaccine against polio. Salk's vaccine led to a significant reduction in polio cases and paved the way for global efforts to eradicate the disease.

The ISI mark is a certification mark for industrial and consumer products in India that indicates that a product meets the standards set by the Bureau of Indian Standards (BIS). The BIS is the national standards body of India and the ISI mark has been used since 1955.

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The ISI mark is a certification mark for industrial and consumer products in India that indicates that a product meets the standards set by the Bureau of Indian Standards (BIS). The BIS is the national standards body of India and the ISI mark has been used since 1955.

The Vikram Sarabhai Space Centre (VSSC) is a major space research center of the Indian Space Research Organisation (ISRO) and is located in Thiruvananthapuram, Kerala, India. The center is named after Dr. Vikram Ambalal Sarabhai (1919-1971), who is known as the "Father of the Indian Space Program". VSSC was established on November 21, 1963, and is responsible for the design and development of launch vehicle technology for India's satellite program. The center also conducts research and development in areas such as aeronautics, avionics, materials, propulsion, and space physics.

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The Vikram Sarabhai Space Centre (VSSC) is a major space research center of the Indian Space Research Organisation (ISRO) and is located in Thiruvananthapuram, Kerala, India. The center is named after Dr. Vikram Ambalal Sarabhai (1919-1971), who is known as the "Father of the Indian Space Program". VSSC was established on November 21, 1963, and is responsible for the design and development of launch vehicle technology for India's satellite program. The center also conducts research and development in areas such as aeronautics, avionics, materials, propulsion, and space physics.

Zero

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Bangalore is called the Garden City of India. This is because of Hyder Ali, the ruler of Mysore, liked the cool climate of Bangalore and so planned a garden that was named as Lalbagh.

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Bangalore is called the Garden City of India. This is because of Hyder Ali, the ruler of Mysore, liked the cool climate of Bangalore and so planned a garden that was named as Lalbagh.

National Highway 2 (NH2): NH2 runs from Delhi to Kolkata, intersecting NH1 at Delhi and passing through cities such as Agra, Kanpur, and Dhanbad.

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National Highway 2 (NH2): NH2 runs from Delhi to Kolkata, intersecting NH1 at Delhi and passing through cities such as Agra, Kanpur, and Dhanbad.

The National Flag of India was designed by Pingali Venkayya in 1921. It was a tricolour Flag with Saffron, White, and Green, with the Ashok Chakra at the centre. The National Flag was adopted on 22nd July 1947.

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The National Flag of India was designed by Pingali Venkayya in 1921. It was a tricolour Flag with Saffron, White, and Green, with the Ashok Chakra at the centre. The National Flag was adopted on 22nd July 1947.

Fossils are the preserved remains or traces of ancient plants, animals, and microorganisms. They provide valuable information about the history of life on Earth, including evolution, extinction, and environmental changes.

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Fossils are the preserved remains or traces of ancient plants, animals, and microorganisms. They provide valuable information about the history of life on Earth, including evolution, extinction, and environmental changes.

The Santosh Trophy is an annual football tournament for men in India, also known as the Senior National Football Championship or the FIFA Santosh Trophy. The All India Football Federation (AIFF) organizes the tournament, which is played between teams from Indian states and government institutes. The trophy is named after Sir Manmatha Nath Roy Chowdhury, the former president of the Indian Football Association (IFA) and Maharaja of Santosh. The IFA started the tournament in 1941 and later donated the trophy to the AIFF.

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The Santosh Trophy is an annual football tournament for men in India, also known as the Senior National Football Championship or the FIFA Santosh Trophy. The All India Football Federation (AIFF) organizes the tournament, which is played between teams from Indian states and government institutes. The trophy is named after Sir Manmatha Nath Roy Chowdhury, the former president of the Indian Football Association (IFA) and Maharaja of Santosh. The IFA started the tournament in 1941 and later donated the trophy to the AIFF.

Declarative sentences are used to make statements, provide information, or explain something. They are the most common type of sentence and are often used to convey facts, opinions, or ideas.

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Declarative sentences are used to make statements, provide information, or explain something. They are the most common type of sentence and are often used to convey facts, opinions, or ideas.

The Statue of Liberty is located on Liberty Island in New York Harbor, New York City. The 305-foot (93-meter) statue is a gift from the people of France to the United States. It was designed by French sculptor Frédéric Auguste Bartholdi and built by Gustave Eiffel, and dedicated on October 28, 1886.

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The Statue of Liberty is located on Liberty Island in New York Harbor, New York City. The 305-foot (93-meter) statue is a gift from the people of France to the United States. It was designed by French sculptor Frédéric Auguste Bartholdi and built by Gustave Eiffel, and dedicated on October 28, 1886.