Latest Science & Technology Questions for IAS Prelims - Set 2
1. Consider the following statements1. Hindustan Aeronautics Ltd. Signed contract to supply 14 Dornier-228 aircraft to the Indian Air Force
2. The Indian Air Force (IAF) purchased 49 Mirage from US
Which of the following statements is false?
a) Only 1
b) Only 2
c) Both
d) None
View Answer / Hide AnswerANSWER: a) Only 1
Explanation: Mirage was purchased from France,produced by the French aircraft manufacturer Dassault Aviation
1. 3D printing is based on methods of applying a 2D image on a 3D surface
2. The 3D printer can print with anything that can be dispensed from a syringe as liquid or paste.
3. 3D Printing employs additive layer processes, where successive layers of materials are laid down in different shapes.
4. A five-storey apartment building has been manufactured using 3D printing technology.
Which of the above statements is true?
a) 2,3
b) 1,2,3
c) 2,3,4
d) All the above
View Answer / Hide Answer3. Consider the following statements regarding Indian Army1. Army making its own Mobile Cellular Communications System (MCCS) using BEL handsets and Code Division Multiple Access (CDMA) technology
2. This is considered to be harder to spoof.
3. They also created a separate Army Wide Areas Network (AWAN) to connect HQ with battalion level formations using optical fiber network.
Which of the above statements is not true?
a) 2,3
b) 1,2
c) 1,3
d) None the above
View Answer / Hide AnswerANSWER: d) None the above
1. Researchers have created the first transistors out of silicene, the world's thinnest silicon material
2. It will lead to development of faster and more efficient computers and other electronics.
3. The major breakthrough here is the efficient low-temperature manufacturing and fabrication of silicene devices for the first time.
4. Silicene is world’s thinnest silicon material. Researchers used it to create One-atom-thin silicon transistors.
Which of the above statement is true?
a) 2,3,4
b) 1,2,3
c) 1,3,4
d) All the above
View Answer / Hide Answer5. Consider the following statements regarding Spectrum1. Spectrum is a frequencies band of electromagnetic waves or radio waves. 2. Radio waves are used for communication and broadcasting.
3. They are harmful in the environment.
4. Two operators can use the same frequency in the same region without interference.
5. FM radio uses 88 to 108 Mhz while Mobile services uses 900-1800 MHz and so on.
Which of the following statements are not true?
a) 3,4
b) 3,4,5
c) 1,4,5
d) 1,2,5
View Answer / Hide AnswerANSWER: a) 3,4
Explanation: Spectrum are not harmful in the enviornment. Two operators cannot use the same frequency in the same region, else interference. Therefore, Government allocates spectrum among the service providers through auction
1. Ultra Wide Band (UWB) are used for short and medium range communications.
2.They use minimal spectrum, minimal power and don’t interfere with other communication services.
Which of the following statements are true?
a) Only 1
b) Only 2
c) Both
d) None
View Answer / Hide Answer7. Consider the following statements1. In 1986 first case of AIDS was detected in India
2. In 1992 India’s first National AIDS Control Program (1992-1999) was launched. Also National AIDS Control Organization (NACO) was constituted to implement the program.
3. A National Council on AIDS chaired by the Prime Minister
4. Recently NACO working on special software to link Aadhar cards of AIDS patients.
Which of the following statements are true?
a) 1,3,4
b) 2, 3,4
c) 1,4
d) All the above
View Answer / Hide Answer8. Consider the following statements1. Soil transmitted helminthes (STH) are a significant public health concern in India
2. Infections of heavy intensity impair physical growth and cognitive development and are a cause of micronutrient deficiencies leading to poor school performance, cognitive development and absenteeism in children.
3. Children aged between one and 19 years will be given a tablet for de-worming on February 10 which is being observed as the National De-worming Day.
Which of the following statements are not true?
a) 1,2
b) 2,3
c) 1,3
d) None
View Answer / Hide Answer9. Consider the following statements1. The oral contraceptive, commonly known as the pill, greatly reduces the chances of mature eggs being produced.
2. It contains oestrogen or progesterone which inhibit the production of FSH, which in turn stops eggs maturing in the ovaries.
3. Carl Djerassi called as the father of the contraceptive pill.
Which of the following statements are true?
a) 1,2
b) 2,3
c) 1,3
d) All
View Answer / Hide Answer10. Consider the following statements related to ‘3-parent-baby’ ?1. Developing baby inherits its mitochondria from the mother — from her egg cell which contains mitochondria. If mother has defective DNA for mitochondria, baby will suffer heart-liver-brain damage.
2. In that case healthy DNA code from another female is inserted into her egg
3. Mitochondria are thus often referred to as cellular powerhouses.
4. Recently Britain became first country to allow a “three-parent” IVF technique which doctors say will prevent some inherited incurable diseases but which critics see as a step towards creating designer babies.
Which of the above statements are true?
a) 1,3,4
b) 2, 3,4
c) 1,3
d) All the above
View Answer / Hide Answer
