Explore topic-wise InterviewSolutions in Current Affairs.

f life period of an isotope is 2 hours. That MEANS, for every 2 hours, the initial quantity gets halved.Let 'x' be the initial amount.After two hours, x becomes halved. So, the amount of isotope PRESENT now is x/2After next two hours (i.e., after four hours from the beginning),x/2 becomes halved. So, the amount of isotope present now is (x/2)/2 = x/4After ANOTHER two hours (i.e., after six hours from the beginning)x/4 becomes halved. So, the amount of isotope present now is (x/4)/2 = x/8Therefore, after six hours, the fraction of initial amount of the isotope left behind will be 1/8 (of x )

The average speed of car is 20kmphStep-by-step EXPLANATION:We KNOW,Average speed  = ( Total distance ) / ( Total Time )Firstly, We calculate the total time taken by car :Time = Distance /  SpeedTime taken when travelling at a speed of 10 kmph:Speed = 10 km/hrDistance = 3 kmTime = 3 / 10 hrTime taken when travelling at a speed of 20 kmph:Speed = 20 km/hrDistance = 3 kmTime = 3 / 20 hrTime taken when travelling at a speed of 30 kmph:Speed = 30 km/hrDistance = 3 kmTime = 3 / 30 = 1 / 10 hrTime taken when travelling at a speed of 60 kmph:Speed = 60 km/hrDistance = 3 kmTime = 3 / 60 = 1 / 20 hrTotal time:T = 3/10 + 3/20 + 1/10 + 1/20 = ( 6 + 3 + 2 + 1 ) / 20= 12 / 20 = 3 / 5 hourTotal distance:D = 3 * 4 = 12 kmAverage speed = ( Total distance ) / ( Total time )Substituting the values,Speed = 12 / ( 3 / 5 )Speed =  ( 12 * 5 ) / 3= 60 / 3=20 kmphHence,The average speed of car is 20kmph

aiah NAIDU is the Chairman of the committee which is set up by GOVERNMENT to deal with the Delhi GANG RAPE.

s CHOSEN to host the 2020 OLYMPIC and Paralympic Games.

. B. SRINIVAS

ocated at BANGALORE

machandran, a veteran JOURNALIST, has RECENTLY been re-elected as the President of Press Club of INDIA.

ional Girl Child Day was recently observed on 24th JANUARY, 2015.

Gainza CREATED this RECORD

s GIVEN HERITAGE STATUS in RAJASTHAN.

tralia, the Commonwealth HEADS of Government meeting was RECENTLY HELD

Sinha is the CURRENT director of the Central BUREAU of Investigation (CBI).HOPE it HELPS

ocratic Republic of CONGO in may 2013 declared that it will START the work on world's biggest hydroelectricity INGA DAM on congo river in October 2015

r Singh was RECENTLY appointed as the first SIKH judge of the Royal COURTS of JUSTICE in UK.Hope it helps

rdhan Singh RATHORE has been appointed as the HEAD of Rajiv Gandhi KHEL Ratna COMMITTEE.

mbwani sworn in as the CHIEF JUSTICE of RAJASTHAN high COURT. justice sunil ambwani TODAY took oath as the chief justice of rajasthan high court at raj bhawan.

ently concluded 99th National SCIENCE CONGRESS was HELD in Bhubaneswar.

Aahar Desh Ka Aadhar was the THEME of "NATIONAL NUTRITION WEEK 2014".

cess of inhalation that is taking OXYGEN inside and the process of exhalation that is throwing out the carbon di oxide.This process is done by diaphram that is a PEAR shaped organ after lungs. When diaphram contracts o2 rich air is TAKEN in and when it relaxes co2 is thrown out.Without BREATHING our lives won't be possible and we WOULD not be able to live.Hope it helps!

oniger is the AUTHOR of the BOOK "ON HINDUISM".

..............

cently gave clearance for using KU as FREQUENCY BAND from satellite for internet on TRAINS

l SPORTS Day, in tribute to the legendary hockeyplayer MAJOR DHYAN Chand, is celebrated every YEAR on August 29th in India.

Hasan BOSE has been RECENTLY awarded with  Yudhvir Memorial AWARD for social WORK recently

Khetrapal SINGH is the FIRST WOMAN REGIONAL DIRECTOR of WHO.

tival, HAILED as ONE of the biggest literaryfestivals of its KIND, was recently HELD in Thiruvananthapuram.

mperature of around 750 °C, iron has a body centred cubic structure. This type of iron is CALLED ferrite. The carbon atoms can easily be held within this less tightly packed structure in what is called a solid solution.If the STEEL is cooled slowly, the iron ions rearrange into a face centred cubic structure called AUSTENITE. The iron ions are more tightly packed in this arrangement and can't hold as many carbon atoms within the structure. The remaining carbon forms a compound with iron called iron carbide or cementite. Some regions of the material are therefore made up of layers of ferrite and cementite. These regions are known as pearlite.If the same steel is quenched rather than being cooled slowly, the carbon atoms do not have time to form cementite. They are trapped within a ‘frozen’ austenite structure in an arrangement called martensite. Movement of dislocations is very difficult in this structure so the metal becomes very hard and brittle.Quenching can be performed with FORCED air convection, oil, fresh water, salt water and special PURPOSE polymers.

xandar who died recently was the GOVERNOR of tamil NADU and MAHARASHTRA

is the social BOOKMARKING site unveiled NEW logo, 6 YEARS SINCE its launch

abinet of india declared YEAR 2013 as water conservation year Hope it HELPS you

ramasundaram has BECOME the first ever WOMAN additional DIRECTOR of CBI