Expected Maths, General knowledge, Current affairs question for tnpsc group II exam-Part 1

1)A's salary is increased by 10% and then decreased by 10% the change in salary is?
Answer=1% decrease
(Explanation: -10+10-(10*10)/100=-1)
2)Karagam is a folk dance of?
Answer=Tamilnadu
3)Which one of the following is not an all India service?
Answer=Indian foreign service


4)If a man were to sell his handcart for Rs.720,he would lose 25%.to gain 25%,the selling price is
Answer=1200
(Explanation:cost price of handcart=(100/75)*720=960.00
selling price for 25% gain=(125/100)*960=1200.00
5)A toy train is marked at Rs.400 and sold at a discount of 8% during ganesh puja.A shopkeeper announces a discount of 8%.The amount he will lose if he announces a single discount of 16% is?
Answer=2.56
(Explanation: selling price when two discounts are given=400*(92/100)*(92/100)=338.56
selling price when single discount is given=400*(84/100)=336
loss=338.56-336=2.56)
6)On mixing two classes A and B of students having average marks 25 and 40 respectively,the overall average obtained is 30.Find the ratio of the students in the classes A and?
Answer=2:1
(Explanation:Let the number of students in classes A and B be ☓ and y respectively.
25x+40y=30(x+y)
25x+40y=30x+30y
5x=10y
x/y=2/1)
7)"White Revolution" is related to?
Answer=Milk production
8)Which micro organisams is used in milk curdling?
Answer=Lactobacillus
9)Who was regarded by gandhiji as his political guru?
Answer=Gopal Krishna Gokhale
10)Which session of the Indian National congress was the "Poorna Swaraj" resolution adopted?
Answer=lahore session,1929
11)Who has been elected china sponsored Asian Infrastructure  Investment bank(AIIB)?
Answer=Dinesh sharma
12)Who has won DSC prize for south Asian Literature 2016?
Answer=Anuradha Roy
(sleeping on Jupiter for his novel deals about violence against women)
13)Who have won WTA Apia International title for tennis on 2016?
Answer=Viktor Troicki
(He is from serbia country)
14)Who has been elected for first female president of Taiwan?
Answer=Tsai Ing-wen (14th president)
(Taiwan capital Taipei,currency is new taiwan dollar)
15)Which bank has launched India's first start-up focussed bank branch?
Answer=State Bank of India