Railway exam general awarness,aptitude and current affairs questions

1)The authority to alter the boundaries of states in india rests with?
Answer=Parliment
(The parliment is authorised to alter the boundaries of states in India(Articles 2 and 3)
2)Which one of the following items comes under the Concurrent list of the Indian constitution?
Answer=Trade union
(The seventh schedule(Article 246) of the Constitution of India contains the three lists:Union list,State list and concurrent list Trade union is mentioned in the concurrent list)
3)The smallest functional unit of kidney is?
Answer=Nephron
4)The deficiency of the following vitamins causes delayed clotting of blood?
Answer=vitamin K(Phylloquinone)
(Delayed clotting time,may occur in new-born babies before their gut bacteria become established)
5)Which one is the best nutrient to prevent bleeding of gums,loosening of teeth and poor wound healing?
Answer=Ascorbic acid
6)Who has been appointed new executive chairman of TERI(The energy resources of institute)?
Answer=Rajendra K pachauri
7)Which day is celebrated "National dewoming day"?
Answer=Febraury 10
8)Who has been chosen prestigious Bharat Ratna Pandit Bhimsen Joshi classical music award for 2015-2016?
Answer=Pandit Ram Narayan
9)World cancer day is observed on?
Answer=Febraury 4
10)Who is the governor of Assam state?
Answer=Padmanabha Acharya
(Assam capital is Dispur)
11)raju can do a work in 10 days and babu in 8 days.raju and babu can do the work on alternate days. If raju begins the work, then the work can be finished in how many days?
Answer=9 days
(work done by first two days,
(1/10)+(1/8)=9/40
work done by first 8 days,
(9/40)*4=36/40=9/10
remaining work=1/10
Total time required=9 days)
12)3 men or 4 women can construct a wall in 43 days then in how many days 7 men and 5 women will construct it?
Answer=12 days
(3 men=4 women
 7 men and 5 women
 7*(4/3)+5-women
43/3 women
m1d1=m2d2
4*43=(43/3)*d2
d2=4*3=12 days)
13)Two numbers are respectively 20% and 50% more than the third number.The percentage that is first of the second is?
Answer=80%
(first no=120x/100
second no=150x/100
percentage=((120x/100)/(150x/100))*100=80%)
14)My house is to the south of the 'State Bank' and the 'Central school' is to the east of my house which is as far away from the 'state bank' as from the 'Central school'.I first go to the 'State Bank' and the start walking to the 'central school'.Just when I am half way through I meet my cousin and then we decide to walk back house. In which direction are we walking now?
Answer=south west
15)In the following Question pick the choice that establishes the logical relationship;
AD:BE::CF:?
Answer=DG
(A-----B
 D-----E
 C-----D
 F-----G)