science & tech MCQ section 5 Practice Questions Answers Test with Solutions & More Shortcuts
science & tech PRACTICE TEST [7 - EXERCISES]
science & tech MCQ section 1
science & tech MCQ section 2
science & tech MCQ section 3
science & tech MCQ section 4
science & tech MCQ section 5
science & tech MCQ section 6
science & tech MCQ section 7
Question : 7
Which one of the following pairs is incorrect?
a) Cosmid - A vector for carrying large DNA fragments into host cells
b) Plasmid - small piece of extrachromosomal DNA in bacteria
c) Interferon - an enzyme that interferes with DNA replication
d) Myeloma - antibody producing tumour cells.
Answer »Answer: (c)
Interferons, Interleukins and Tumor necrosis factors are the proteins produced as a result of immune response to localized tissue damage.
Question : 8 [SSC SAS 2010 ]
The US Department of Energy’s Brookhaven National Laboratory in New York an attempt to understand cosmic history used a giant atom smasher and has generated a temperature of
a) 85 billion degrees celsius
b) 4 trillion degrees celsius
c) 2.5 trillion degrees celsius
d) 52 billion degrees celsius
Answer »Answer: (b)
This scorching achievement happened inside the Relativistic Heavy Ion Collider (RHIC), which is a 2.4-mile (3.9 kilometres) underground track where particles smash into one another under conditions that existed about a millionth of a second after the Big Bang.
The new feat, at Brookhaven National Laboratory in Upton, N.Y., occurred when gold nuclei (the positively charged part of the atom made of protons and neutrons) were sent speeding around RHIC at near light-speed until they crashed into each other.
When the ions collide, the enormous energy released is so, intense it melts the neutrons and protons inside the gold nuclei into their constituent parts, namely quarks and gluons.
RHIC physicists have measured the temperature of this quark-gluon plasma, finding it reaches around 7.2 trillion degrees Fahrenheit (4 trillion degrees Celsius).
Question : 9
Consider the following statements.
- 45th Navy Day was observed on 4th December 2015.
- Chief of Naval staff Robin K Dhowan along with Air Chief Marshal Arup Raha and Army Chief General Dalbir Singh Suhag paid tributes to martyrs at the Amar Jawan Jyoti in New Delhi.
- Every year Indian Navy celebrates Navy Day on December 4 to commemorate the success of the Operation Talwar of 1971 India-Pakistan War.
a) 3 only
b) 2 only
c) 1 only
d) None of them
Answer »Answer: (b)
44th Navy Day was observed on 4th December 2015. Every year Indian Navy celebrates Navy Day on December 4 to commemorate the success of the Operation Trident of 1971 India-Pakistan War.
Question : 10
Which bank has launched India’s first contactless debit and credit cards?
a) HDFC
b) HSBC
c) ICICI Bank
d) Axis bank
Answer »Answer: (c)
Contactless cards launched by ICICI Bank can be used to make electronic payments by waving the cards near the merchant terminal instead of dipping or swiping. These cards are based on Near Field Communication technology.
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