To solve this question, the user needs to have knowledge of our solar system and the number of planets in it.

Option A: This option is incorrect because there are only 8 planets in our solar system, not 11.

Option B: This option is correct. There are 9 planets in our solar system, including Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and the dwarf planet Pluto. However, in 2006, the International Astronomical Union (IAU) redefined the criteria for what constitutes a planet, and reclassified Pluto as a "dwarf planet." Therefore, there are currently only 8 planets in our solar system.

Option C: This option is incorrect because there are 8 planets in our solar system, not 11 or 8.

Option D: This option is incorrect because there are only 8 planets in our solar system, not 10.

The Answer is: C.

To answer this question, the user needs to know the origin of the name "Bluetooth".

Option A, Blue Whale, is incorrect. The name Bluetooth is not derived from a blue whale.

Option B, Harald Blatand, is correct. Bluetooth technology is named after Harald Blatand, who was a 10th-century king in Denmark. Blatand means "Bluetooth" in English, and he was known for his ability to unite different tribes and nations, just as Bluetooth technology allows different devices to communicate with each other.

Option C, Harold Bleacher, is incorrect. The name Bluetooth does not have anything to do with Harold Bleacher.

Option D, Bluetooth, is incorrect. Bluetooth technology is not named after itself.

Therefore, the answer is: B. Harald Blatand.

To answer this question, the user needs to know about the components of milk protein.

The correct answer is:

B. Casein

Explanation:

Milk protein is made up of two main types of protein: casein and whey protein. Casein is the most abundant protein in milk, making up about 80% of the protein content. It is a slow-digesting protein that is often used in protein supplements. Milkein, Malkein, and Kazien are not correct names for milk protein.

To solve this question, the user needs to have knowledge about different snake species and their reproductive behavior.

The snake species that nest and lay eggs and guard them until they hatch are called oviparous. The correct answer to this question is:

The Answer is: D. King Kobra

Explanation:

Out of the given options, King Kobra is the only oviparous snake species. The female King Kobra lays eggs in a nest made up of leaves and other debris, and she stays with the eggs, protecting them until they hatch. The incubation period for the eggs is around 60 days. In contrast, Black Mamba, Russel's Viper, and Gaboon Viper are all viviparous, which means they give birth to live young ones instead of laying eggs.

To answer this question, the user needs to have some knowledge about environmental conservation and the purpose of various books.

Option A is incorrect because the Red Data Book is not related to drought-hit places.

Option B is correct. The Red Data Book is a compilation of the world's endangered species of animals, plants, and fungi. It is a comprehensive list of threatened species with the aim of protecting them from extinction.

Option C is incorrect because the Red Data Book is not related to the hottest places on earth.

Option D is incorrect because the Red Data Book is not related to earthquake-prone areas on earth.

Therefore, the correct answer is:

The Answer is: B. Book showing list of animals, plants and fungi which are under the threat of extinction.

To solve this question, the user needs to know about the escape velocity of an object. Escape velocity is the minimum speed required for an object to overcome the gravitational pull of a celestial body and escape into space.

Now, let's go through each option and explain why it is right or wrong:

A. 550 m/s: This option is not correct. This velocity is too low for an object to escape Earth's gravitational pull. It is not sufficient to overcome the gravitational attraction of the Earth.

B. 5.5 km/s: This option is not correct. Although this velocity is faster than option A, it is still too low for an object to escape Earth's gravity. It is only the speed required to reach low Earth orbit.

C. 11 km/s: This option is correct. This is the minimum speed required for an object to escape Earth's gravitational pull. When an object reaches this velocity, it has enough kinetic energy to break free of the Earth's gravity.

D. 110 km/s: This option is not correct. This velocity is much higher than the escape velocity required to escape Earth's gravity. It is not necessary to reach such a high velocity to escape Earth's gravity.

Therefore, The Answer is: C

To solve this question, the user needs to know the definition of the speed of light.

The speed of light is defined as the distance light travels in a vacuum per unit of time.

Now, let's go through each option and explain why it is right or wrong:

A. 300,000 Mt/Sec: This option is incorrect because "Mt" is not a standard unit of measurement for speed. Also, the correct value of the speed of light is 299,792.458 km/s, which is not equal to 300,000 Mt/Sec.

B. 30000 Km/Sec: This option is incorrect because the actual value of the speed of light is much greater than 30,000 km/s. The correct value is around 299,792.458 km/s.

C. 300,000 Km/Sec: This option is correct. The speed of light in a vacuum is approximately 299,792.458 km/s, which is rounded up to 300,000 km/s for convenience.

D. None of the above: This option is incorrect because Option C is the correct answer.

Therefore, the Answer is: C. 300,000 Km/Sec

To solve this question, the user needs to have knowledge of marine biology.

Now, let's go through each option and explain why it is right or wrong:

A. Killer Whale: Killer whales are not fish. They are actually the largest member of the dolphin family.

B. Great White Shark: Great white sharks are also not the largest fish in the world. They are one of the most well-known shark species but are not the largest.

C. Blue Whale: Blue whales are the largest animals on earth but they are not fish. They are mammals.

D. Whale Shark: This option is correct. Whale sharks are the largest fish in the world, growing up to 40 feet (12 meters) in length and weighing up to 47,000 pounds (21,500 kg). They are filter feeders and feed mainly on plankton.

The Answer is: D