Explore topic-wise InterviewSolutions in Current Affairs.

The money that was amusing to spend was the money you spent on luxuries.

Tom had been a sole trial to his for twenty years.

I never saw anyone wear an expression of such deep gloom.

Cronshaw and Tom went to Monte Carlo to play gamble and spent one year. happily there.

4. Shree lives in an apartment in a small town called Katpadi Junction. 

5. Amma works in a jewellery shop. 

2. Appa works as a taxi driver. 

3. They want her to learn computers. 

1. So they are pleased that she likes to use it.

5. The next day, a cyber crime officer goes through Shrees computer. 

1. Within hours, the police find the man who pretended to be Chaitra. 

2. They nab him from his office in Bengaluru. 

3. They find out that he has been trying to befriend many young girls and boys on social media.

4. Shree decides to only have friends from her own school.

1. Scattering is the process of absorption and then re-emission of light energy. The air molecules of size smaller than the wavelength of incident light absorb the energy of incident light and then re-emit it without change in its wavelength. 

2. The intensity of scattered light is found to be inversely proportional to fourth power of wavelength of light. 

3. The wavelength of violet is least and red light is most, therefore from the incident white light, violet light is scattered the most and red light is scattered the least.

1. The ciliary muscle attached with eye lens helps to change the focal length of eye lens. 

2. When the eye is focused on a distant object, these are relaxed. So the focal length of eye lens increases to its maximum value.

3. F_(max) – 2.5 cm,u = oo, v = 2.5 cm. The parallel rays coming from a distant object are focussed on the retina with 2.5 cm image distance. 

4. When the eye is focused on a nearer object the muscles are strained. So the focal length of the eye lens decreases its minimum value. 

5. F_(min) = 2.27 cm, u = 25 cm, v = 2.5 cm. The rays from an object (u = 25 cm) at L (point of least distance of distinct vision) are focused on the retina with 2.5 cm image distance.

It forms an inverted, real image.

When my speeding car’s tyre burst on highway, I found myself in danger.

Correct option is (b) jeopardy

Given \(\frac{dr}{dt}\)= 2inch/sec, r = 5 inch, \(\frac{dA}{dt}\) = ? 

(a) A = πr² 

\(\frac{dA}{dt}\) = π2r. \(\frac{dr}{dt}\)= π × 2 × 5 × 2 = 20π sq. inches / sec. 

(b) After 5 sec, dr = 2dt 

r = 2t 

⇒ when t = 5, r = 10 inches 

\(\frac{dA}{dt}\) = π . 2r \(\frac{dr}{dt}\)= π × 2 × 20 × 2 = 40π square inches/sec.

Inherent property of all the bodies by virtue of which they cannot change their state of rest or uniform motion along a straight line by their own is called inertia.

Two bodies of equal mass possess same inertia because it is a factor of mass only.

A propellant is a chemical substance that can undergo combustion to produce pressurized gases whose energy is utilized to move a rocket against the gravitational force of attraction.

A collection of billions of stars held together by mutual attraction is called galaxy.

1. To develop the technology required for interplanetary mission. . 

2. To explore the surface of Mars. 

3. To study the constituents of the Martian atmosphere. 

4. To provide information about the future possibility of life and past existence of life

Mangalyaan was sent to Mars

Cryogenic fuels.

(d) Ethyl alcohol

(d) All the above

(c) Mangalyaan

Polyurethanes and Polybutadienes.

(c) Newton’s third law

Cryogenic fuels are the fuels used in rocket engine. They are maintained or stored at very low temperature in order to keep them in liquid state.

Rakesh Sharma.

Mars is called as Red planet.

The stars, the planets, the Moon and any other objects like asteroids and comets in the sky are called celestial objects.

1. Sunitha Williams started her career as an astronaut in August 1998.

2. She made two trips to the International Space Station.

3. She set a record of the longest space walking time by a female astronaut in 2012, with a total space walk of 50 hour and 40 minute (7 space walks). 

4. She is one of the crew of NASA’s Manned Mars Mission.

Polar satellite launch vehicle (PSLV). 

Geosynchronous satellite launch vehicle (GSLV)

(c) very low temperature

Apollo missions

(d) Guidance

1. Apollo Missions are the most popular missions of NASA. 

2. These missions made American Astronauts to land on the Moon. 

3. It consists of totally 17 missions. 

4. Among them Apollo -8 and Apollo-11 are more remarkable. 

5. Apollo-8 was the first manned mission to go to the Moon. It orbited around the Moon and came back to the Earth.

6. Apollo-11 was the first ‘Man Landing Mission’ to the moon. It landed on the Moon on 20th July 1969. – 

7. Neil Armstrong was the first man to walk on the surface of the Moon

Kalpana Chawla and Sunitha Williams.

Newton’s third law (For every action there is an equal and opposite reaction).

1. c 

2. d 

3. b 

4. a

1. The discovery of presence of water molecules in the lunar soil.

2. Chandrayaan-1 confirmed that the Moon was completely molten once.

3. Chandrayaan-1 has recorded images of the landing site of the US space-craft Apollo-15 and Apollo-11. 

4. It has provided high-resolution spectral data on the mineralogy of the Moon. 

5. The existence of aluminium, magnesium and silicon were picked up by the X-ray camera. 

6. More than 40,000 images have been transmitted by the Chandrayaan-1 camera in 75 days. 

7. The acquired images of peaks and craters show that the Moon mostly consists of craters. 

8. Chandrayaan-1 beamed back its first images of the Earth in its entirety. 

9. Chandrayaan-1 has discovered large caves on the lunar surface that can act as human shelter on the Moon.

1. To find the possibility of water on the Moon. 

2. To find the elements of matter on the Moon. 

3. To search for the existence of Helium-3.

4. To make a 3-dimensional atlas of the Moon. 

5. To study about the evolution of the solar system.

1. Chandrayaan – Moon 

2. Mangalyaan – Mars 

3. Cryogenic – Fuel 

4. Apple – 8 – First manned mission to the moon 

5. Apollo-11 – First man landing mission to the moon

(a) 22nd October 2008

1. False 

Correct statement: Guidance system may include sensors, radars and communication equipments.

2. True

3. False 

Correct statement: The propellants may be in the form of a liquid or solid.

3. False 

Correct statement: The propellants may be in the form of a liquid or solid.

4. True.

5. False

Correct statement: Combustion of solid propellants cannot be stopped once it is ignited.

1. Structural system 

2. Payload system 

3. Guidance system 

4. Propulsion system

There are four major parts or systems in a rocket. They are: 

1. Structural system 

2. Payload system. 

3. Guidance system. 

4. Propulsion system.

1. Structural system (Frame):

It is the frame that covers the rocket. It is made up of very strong but light weight materials like titanium or aluminum. Fins are attached to some rockets at the bottom of the frame to provide stability during the flight.

2. Payload system: 

It is the object that the satellite is carrying into the orbit. Payload depends on the rocket’s mission. The rockets are modified to launch satellites with a wide range of missions like communications, weather monitoring, spying, planetary exploration, and as observatories. Special rockets are also developed to launch people into the Earth’s orbit and onto the surface of the Moon. 

3. Guidance system: 

Guidance system guides the rocket in its path. It may include sensors, on-board computers, radars, and communication equipments.

4. Propulsion system:

It takes up most of the space in a rocket. It consists of fuel (propellant) tanks, pumps and a combustion chamber. There are two main types of propulsion systems. They are: liquid propulsion system and solid propulsion system.

1. Astronomy 

2. Milky way 

3. 687 

4. Mars Orbiter Mission 

5. Neil Armstrong

1. Orbiter: 

It revolves around the Moon and it is capable of communicating with Indian Deep Space Network (IDSN) at Bylalu as well as Vikram Lander. 

2. Lander: 

It is named as Vikram in the memory of Dr. Vikram A. Sarabhai, the father of Indian space program

1. It takes up most of the space in a rocket.

2. It consists of fuel (propellant) tanks, pumps and a combustion chamber. 

3. There are two main types of propulsion systems, liquid propulsion system and solid propulsion system.

Moon doesn’t have its own light, but it reflects the sunlight. The time period of rotation of the Moon about its own axis is equal to the time period of revolution around the Earth. That’s why we are always seeing its one side.

(b) Mangalyaan

(b) Apollo-8

1. Liquid propellants: 

• Fuel and oxidisers are combined in a combustion chamber where they bum and come out from the base of the rocket with a great force. 
• Liquid hydrogen, hydrazine and ethyl alcohol are the liquid fuels. 
• Some of the oxidizers are oxygen, ozone, hydrogen peroxide and fuming nitric acid.

2. Solid propellants :

• Fuel and oxidiser compounds are already combined. 
• When they are ignited they bum and produce heat energy. 
• Combustion of solid propellants cannot be stopped once it is ignited. 
• Solid fuels used in rockets are polyurethanes and polybutadienes. Nitrate and chlorate salts are used as oxidizers.