Railway RRB 2016 Course – Mock Test 2

Explanation:
The ozone layer resides in the stratosphere and surrounds the entire Earth. The ozone hole is not technically a “hole” where no ozone is present, but is actually a region of exceptionally depleted ozone in the stratosphere over the Antarctic

Explanation:
Adam Smith is often touted as the world’s first free-market capitalist. Adam Smith was a Scottish political economist and philosopher. He has become famous by his influential book The Wealth of Nations (1776).

Explanation:
Active transport, this is the only transport method that can move species against their concentration gradient (from low to high concentration). Facilitated diffusion only moves species down their concentration gradient from high to low concentration.

Explanation:
A single strand of DNA is a chain of nucleotides joined by covalent bonds

Explanation:
Smelting is a form of extractive metallurgy; its main use is to produce a base metal from its ore

Explanation:
Calcium carbide is also used in some countries for artificially ripening fruit. When calcium carbide comes in contact with moisture, it produces acetylene gas, which is quite similar in reaction to the natural ripening agent ethylene.

Explanation:
luster is the way light interacts with the surface of a crystal, rock, or mineral. The atoms of metallic elements have an outer layer of electrons that give metals many of their characteristic properties, including malleability, electrical conductivity and luster.

Explanation:
Russia’s area – 17,075,200 sq. km, followed by Canada, USA, China

Explanation:
Ghiyas-ud din Tughlaq laid the foundation of the Tughlaq dynasty.

Explanation:
A smoke bomb is a firework designed to produce smoke upon ignition. Smoke bombs are useful to military units, airsoft games, paintball games, self-defense and pranks. They are also used in smoke tests.

Explanation:
The recommendations for Bharat Ratna are made by the Prime Minister himself to the President. Indira Gandhi got it in 1971, when she was the PM herself.

Explanation:
There are five Jantar Mantar monuments in India, of which the largest is in Jaipur

Explanation:
It is a collection of poems by the Indian poet Rabindranath Tagore

Explanation:
The scientific study of rocks is called petrology, which is an essential component of geology.

Explanation:
The Kargil War, also known as the Kargil conflict, was an armed conflict between India and Pakistan that took place between May and July 1999 in the Kargil district of Kashmir and elsewhere along the Line of Control.

Explanation:
Rabindranath Tagore was the first Indian ever to receive a Nobel Prize. He received the prize for Literature in 1913.

Explanation:
Rihand Dam is a concrete gravity dam located at Pipri in Sonbhadra District in Uttar Pradesh, India.

Explanation:
Vice-President of India should be a citizen of India, over 35 years of age, must not hold an office of profit, and qualified for election as a member of Rajya Sabha

Explanation:
Founded on December 30, 1906 in Dhaka, Bangladesh. It was founded by a group of people.

Explanation:
14 in 1969 and 6 in 1980. After this New bank of India merged with PNB, so now 19 nationalized banks.

Explanation:
Tripitaka is the collection of the teachings of the Buddha over 45 years in the Pali language, and it consists of Sutta – conventional teaching, Vinaya – disciplinary code, and Abhidhamma – moral psychology.

Explanation:
2 phases: house listing and population enumeration

Explanation:
Flipkart is chosen as ‘Website of the Year India 2015’ in India because of its content, navigation, design and recommendation intention

Explanation:
Pin Valley National Park is a National park of India located within the Lahaul and Spiti district, in the state of Himachal Pradesh.

Explanation:
FAO has three main goals are: the eradication of hunger, food insecurity and malnutrition.
FAO was established on 16 October 1945. 197 members including India.

Explanation:
Other being Bichhua, Natpuja, Naga dance, etc.

Explanation:
Dominion status means autonomous community.

Explanation:
Tarabai Bhonsle was a royal from the Maratha empire of India. She was the queen of Chhatrapati Rajaram Bhonsle, son of the empire’s founder Shivaji

Explanation:
Thar Desert, also called Great Indian Desert located partly in Rajasthan state, northwestern India

Explanation:
Hickey’s Bengal Gazette was an English newspaper published from Kolkata (then Calcutta), India. It was the first major newspaper in India, started in 1780. It was published for two years. Founded by James Augustus Hicky,

Explanation:
Located in Bhilai, in Chhattisgarh, is India’s first and main producer of steel rails. It was set up with the help of the USSR in 1955.

Explanation:
Eye color develops from iris pigmentation and the scattering of light

Explanation:
Vitamin C, also known as ascorbic acid, is a water-soluble vitamin found in fruits and vegetables, including oranges, strawberries, broccoli, tomatoes and green peppers. Vitamin C is easily destroyed by excessive heat and water, as well as exposure to air.

Explanation:
because it is highly reactive and spontaneously to combusts when expodes to the air so kept in water.

Explanation:
Liquefied petroleum gas or liquid petroleum gas (LPG or LP gas), also referred to as simply propane or butane, are flammable mixtures of hydrocarbon gases used as fuel in heating appliances, cooking equipment, and vehicles.

Explanation:
A rocket works by expelling gases from one end at a very high velocity. The escaping gases have a very high speed and this with their mass translates to a very large momentum.

Explanation:
Fertilizer is a substance added to soil to improve plants’ growth and yield, which can be both natural or man made

Explanation:
It is CaSO₄•2H₂O. It is widely mined and is used as a fertilizer, and as the main constituent in many forms of plaster, blackboard chalk and wallboard.

Explanation:
Boric acid has mild antibiotic properties against fungal or bacterial infection. A boric acid eye wash cleans eye and help clear out an infection like conjunctivitis.

Explanation:
Discovered in 1932 by James Chadwick.

Explanation:
A shunt is a device which allows electric current to pass around.

Explanation:
It is nowhere written that Indians win medals or not. But it can be assumed that encouragement leads to better performance which the statement says.

Explanation:
Only UREA has all letters in word ARCHITECTURE

Explanation:
Second thing is controlled by first, but in Smoke-Fire, smoke is controlled by fire

Explanation:
All others are type of games.

Explanation:
The pattern followed is – +2 +3, +4. B+2, D+3, G+4

Explanation:
Bronze is alloy, all others metals

Explanation:
I+2 = K, K+1 = L. C+2 = E, E+1 = F

Explanation:
3, 19 both prime numbers. In all other pairs composite numbers

Explanation:

We have to find AB which equals = √(8^2 + 4^2) = √80 = 4√5 km

Explanation:
First a word, then some phrase, sentence, paragraph n whole chapter

Explanation:
Forward – RU
Reverse – DI, NO

Explanation:
Each letter is replaced by twice of that number of that letter, is 14 so written as 14*2 = 28, U is 21 so written as 21*2 = 42, …..

Explanation:
Double series
3, 6, 9, 12, 15, …
5, 7, 9, 11, 13

Explanation:
Double difference series
9-2 = 7, 20-9 = 11, 39-20 = 19, 70-39=31
11-7 = 4, 19-11 = 8, 31-19 = 12

Explanation:
M is son of H. H is mother of Q and Q is mother of K. so M is brother of Q, so M is uncle of Q’s child K

Explanation:
The lady is man’s nephew’s maternal grandmother, this means lady is mother of man, and since lady is mother of man, so lady is also mother of man’s sister.

Explanation:
All apples are fruits which is depicted by 1st figure, and vegetables are a different thing from them so which is alone circle.

Explanation:

Explanation:
To be at right angle, the hands should make an angle of 90 degree, at 2 : 25 90 degree angle is made.

Explanation:
Now 362/7 = 51 weeks + 5 days, so Tuesday + 5 days = Sunday

Explanation:
Cloth is woven by thread, mesh made from fire

Explanation:
628 – 586 = 42, 242 – 200 = 42

Explanation:
AHM – A+1, H-2, M+3 = BFP

Explanation:
Do by finding their decimal values
OR
Compare each
First – 2/3 and 3/5
2*5 = 10 and 3*3 = 9
So 2/5 is greater than 3/5
Next – 2/5 and 8/11
2*11 = 22 and 8*5 = 40
So 8/11 is greater than 2/5
Next – 8/11 and 11/17
8*17 = 136 and 11*11 = 121
So 8/11 is greatest

Explanation:
(1005)^2 – (998)^2
(1000+5)^2 – (1000-2)^2
1000000 + 25 + 2*5*1000 – (1000000 + 4 – 2*2*1000)
25 + 10000 – 4 + 4000

Explanation:
The formula is 180*(n-2), n is number of sides
Hexagon is 6 sided polygon, so 180(6-2)

Explanation:
Face value of 7 in 5723 is 7 and place value of 7 in 5723 is 700

Explanation:
(36/100)*x + (3/5)*(60/100)*75 = 252
(36/100)*x + 27 = 252
So (36/100)*x = 225

Explanation:
(5+x)/(13-x) = 1/2
Solve, x = 1

Explanation:
(14^3 + 6^3) / (14+6) = 14^2 + 6^2 – x
14^2 + 6^2 – 14*6 = 14^2 + 6^2 – x
So, x = 14*6

Explanation:
Can be answered thru options
OR
700x + 500y = 3800
So 7x + 5y = 38
Or 5y = 38 – 7x
Or y = (38-7x)/5
Now, y should be a whole number, and then (38-7x) should be divisible by 5, this happens when x = 4

Explanation:
No letter should repeat, so REQUIRE has letters – R, E, Q, U, I
So we have to made 4 letter words from these 5 letters. E, U and I cannot come at 1st and last place
So 2 choices (R, Q) at first place and then 1 choice at last place which gives 2*1 = 2 choices
Now 3 choices (E, U, I) for second place and then (3-1)=2 choices for 3rd place which gives 3*2 = 6 choices
So total 6*2 = 12 choices or words

Explanation:
2546.8 – 125.9 + 342.8 = (2546.8 + 342.8) – 125.9

Explanation:
2 m = 4 w
So 1m = 2 w
6m + 10 w = 6 * (2w) + 10w = 22 w
So we have to find the number of days for 22 women
4 women do work in 11 days working 8 hours, let 22 women do work in x days working 4 hrs each day, then
W1*D1*H1 = W2*D2*H2
4*11*8 = 22*x*4
Solve, x = 4 days

Explanation:
Coins – 5x, 11x, 9x, so
Value of 25 paise coins = (25/100)*5x = 5x/4, of 50 paise coin = (50/100)*11x = 11x/2, of Re 1 coins = 1*9x = 9x
So total value is 5x/4)+(11x/2)+9x = 63x/4 which equals 126, so x = 8
Total coins = 5x+11x+9x = 25x = 25*8

Explanation:
Let x litres of milk at Rs 32 per litre be mixed
SP = 45, gain% = 25%, so CP = (100/125) * 45 = Rs 36
So
1st milk(x kg)………………. 2nd milk(18 l)
32…………………………………44
…………………..36
8…………………………………..4
8 : 4 = 2 : 1
So x/18 = 2/1
Solve, x = 36

Explanation:
Let speed of boat in still water = x km/hr
So speed upstream = x-4, and speed downstream = x+4
Now given:
Time to travel 10 km downstream = time to travel 10 km upstream – 20/60
So 10/(x+4) = 10/(x-4) – 1/3
10/(x-4) – 10/(x+4) = 1/3
10x+40 – (10x-40)/(x² – 16) = 1/3
80/(x² – 16) = 1/3
x² – 16 = 240
solve, x = 16
so downstream speed = 16+4

Explanation:
For a number to be divisible by 3, the sum of digits should be divisible by 3
So sum here is 2+3+3+7+8+* = 23+*, now 23+1 = 24 is divisible by 3 but 1 not in options, next 23+4 = 27 is divisible by 3

Explanation:
(A+12) = 2B – 12, so A – 2B = -24
Also (A+4)/B = 8/9 so 9A – 8B = 36
Solve, both equations, A = 12, B= 18
So required ratio is 12/18 = 2/3

Explanation:
Given: 2P = P [1 + r/100]^6
Raise to power 4 both sides gives
[2P]^4 = {P [1 + r/100]^6}^4
16 = [1 + r/100]^24 – so 24 years

Explanation:
A : B
1600* 4 + 1800*8 : 1800*4 + 1600*8
16*4 + 18*8 : 18*4 + 16*8
16 + 18*2 : 18 + 16*2
8 + 18 : 9 + 16
26 : 25
So difference = (26-25)/(26+25) * 11730

Explanation:
(4500-x)*6*8/100 + x*7*5/100 = 1991
2160 – 48x/100 + 35x/100 = 1991
169 = 13x/100
Solve, x = 1300

Explanation:
36 km/hr = 36* (5/18) = 10 m/s. let x is length of train
(150+x)/45 = 10
Solve, x = 300
So to cross man, 300/10 = 30 s

Explanation:
Total of remaining 14 students = 35*16 – 21*14 = 560 – 294 = 266
So average = 266/14 = 19

Explanation:
Downstream speed = 10+4 = 14
Upstream speed = 10-4 = 6
So time = (84/14) + (84/6) = 6+14

Explanation:
Radius of outer = 0.8 cm, so of inner = 0.8 – 0.1 = 0.7 cm
So water it can hold is (22/7) * 0.7 * 0.7 * 40

Explanation:
(x^2 + y^2)/ (x^2 – y^2)
take y^2 common
Gives ((x/y)^2 + 1)/ ((x/y)^2 – 1) = (81/25 + 1)/ (81/25 – 1)

Explanation:
We have a direct formula for this:
Profit/Loss % = { (100+12) [(100-30)/(100-20)] } – 100
= -2%
So loss 2%