Learn 100 questions from RRB Group D Shift 3

RRB Group D Shift 3 Questions

i. Ionic compounds have low melting and boiling points.

ii. Ionic compounds are brittle and break into pieces when pressure is applied.

iii. Ionic compounds are solids and are somewhat hard because of the strong force of attraction between the positive and negative ions.

iv. Ionic compounds conduct electricity in the molten state.

It is the plots of quantities demanded at various time.

It is the plots of quantities demanded at various price.

It will reduce the release of CFCs that react with ozone molecules.

It will help convert oxygen molecules into ozone.

It will reduce the production of CFCs from oxygen molecules.

a) Resistivity of a material is dependent on the nature of the material.

 (b) Resistivity of a material is independent of the area of cross section. 

(c) Resistivity of a pure metal is more than its alloy.

Seminal vesicle is a gland present in human males

In Amoeba, splitting of two cells takes place in any plane

Fertilisation of egg takes place in the uterus in human female

Regeneration is not the same as reproduction

5 is not possible because the last digit should be 5 or 0
8 is not possible because it should be divisible by 2 and 4 , it is not divisible by 4 " last two digit is not multiple of 4)
7 is not divisible by the number
sum of these numbers is multiple of 3 so it is divisible by 6
8118=8+1+1+8=18/3=6

all the options are divisible by 10
to check divisibility of  last 3digits should be "0" or multiple of 8
to check the divisibility of 12 =3 x 4 check the divisibility of 3 and 4
to check the divisibility of 16 = 4 x 4 check the divisibility of 4

altogether we can check the divisibility of 2,3,4
if it is an even number, it is divisible by 2 so all the options are divisible 
the sum of all the number is the multiple of 3 then it should be divisible by 3 
100040=1+0+0+0+4+0=5 not divisible by 3
100020=1+0+0+0+2+0=3 divisible by 3
100060=1+0+0+0+6+0=7 not divisible by 3
100080=1+0+0+0+8+0=9 divisible by 3

last 3 digits of option 2 is 020=not a multiple  of 8
last 3 digits of option 4 is 040=it is a multiple of 8

Either conclusion I or conclusion III follows

number of students interviewed = 1800+2000+1800+1800+1300=8700
number of students selected = 1000+1120+1100+1200+800=5220
percentage of selection =5220/8700=0.6=60%

average of two number = (x+y)/2
(x+12)/2=26
x+12=52
x=52-12=40

pipe A can fill =15
pipe B can fill = 20
pipe C can empty =30
 take LCM of these it will be the capacity of tank
it is 60
efficiency of A = 60/15=4
efficiency of B = 60/20=3
efficiency of C=60/30=2 (negative)

so the all are open then the efficiency = 4+3-2=5

so the time taken for this =60/5=12 hrs

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