Defence Science and Technology Laboratory Interview Questions, Process, and Tips

Ques:- Where you are right now?
Ques:- In 1000 wine bottles stack 10 are poisoned given 10 rats what is the minimum number of tries to find the poisoned one. Rat dies once it licks the poisoned wine.
Recent Answer : Added by Admin On 2020-05-17 12:05:45:

Answer: 10
Reason:
The best case happens ONLY when each rat dies just as they
taste the FIRST bottle given to them (you can imagine it a
miracle 😀 )
In this case, the very first 10 attempts reveal the
poisonous bottles. So the answer is 10.

Ques:- Find out the wrong number in the series:
125, 106, 88, 76, 65, 58, 53
A. 65
B. 76
C. 88
D. 106
Recent Answer : Added by Abhay singh On 2022-05-17 08:56:47:

88

Ques:- Why do you think you would do well at this job?
Ques:- Have you consider starting your own business?
Ques:- A policeman buys some bunches of yellow bananas at 30 cents per bunch and red bananas 40 cents/bunch .He said if i have split the sum equally and bought bananas he would have got two more bunches find the amount he used it to buy bananas
Recent Answer : Added by Admin On 2020-05-17 12:01:07:

140 cents

Ques:- Sam and Mala have a conversation. Sam says I am certainly not over 40. Mala says I am 38 and you are atleast 5 years older than me. Now, Sam says you are atleast 39. All the statements by the two are false. How old are they really?
Ques:- At what rate percent on simple interest will a sum of money double itself in 30 years?
Recent Answer : Added by Amudha A On 2021-09-09 07:24:42:

A=P+SI——(1)
sum of money after 30 years = Double the money
A=2P———-(2)

Equate 1 and 2
P+SI=2P
SI=2P-P
SI=P————-(3)

WKT, SI= PTR/100

Equate 3 and SI

P=PTR/100
P=P*30*R/100
R=P*100/P*30
R=100/30 or 10/3 or 3(1/3) %

Ques:- How do you feel about the way you & others in the department were managed by your supervisor?
Ques:- Number Series 11,14,12,15,13,16,?
Recent Answer : Added by Admin On 2020-05-17 11:59:56:

11 14
12 15
13 16
=======
14 17
the answers is 14

Ques:- Give 3 reasons, why I should recruit you.
Ques:- Are you ready to work in night shifts?
Ques:- Describe your Total Exp.
Ques:- A person was asked to state his age in years. His reply was, “Take my age three years hence, multiply it by 3 and then subtract three times my age three years ago and you will know how old I am.” What was the age of the person?
Ques:- Considering that asking for the age is illegal they asked – “In which year did you graduate from the University?” (which means the same)
Ques:- Current General Knowledge
Ques:- In a group of 15,7 have studied Latin, 8 have studied Greek, and 3 have not studied either.How many of these studied both Latin and Greek
Recent Answer : Added by Admin On 2022-09-29 16:16:30:

Given:

In a group of 15 students,

7 have studied Latin,

8 have studied Greek,

3 have not studied either.

To find:

The number of students who studied both Latin and Greek.

Solution:

In a group of 15 students, have studied Latin, 8 have studied Greek, 3 have not studied either.

Therefore,

n(A∪B) = 15 – 3

n(A∪B) = 12

7 have studied Latin,

n(A) = 7

8 have studied Greek,

n(B) = 8

n(A∩B) is the number of students who studied both Latin and Greek.

n(A∩B) = n(A) + n(B) – n(A∪B)

n(A∩B) = 7 + 8 – 12

n(A∩B) = 15 – 12

n(A∩B) = 3

The number of students who studied both Latin and Greek is 3

Final answer:

3 of them studied both Latin and Greek.

Thus, the correct answer .3

Ques:- Drawback is?
A. An incentive to exporters
B. Means of tying Pyjamas
C. A subsidy to exporters
D. A penalty to exporters forlate delivery
Ques:- Headquarter of WTO is located in
Ques:- Tell me about television?
Ques:- A and B entered into a partnership investing Rs.16,000 and Rs.12,000 respectively. After 3 months, A withdrew Rs.5000 while B invested Rs.5000 more. After 3 years of C, out of a total profit of Rs.21,000. The share of B exceeds that of C, out of a total profit of Rs.26,400 after one year by
A. Rs. 2400
B. Rs. 3000
C. Rs.3200
D. Rs.3600
Recent Answer : Added by narendra On 2022-09-18 09:02:51:

D

Ques:- Draw single line diagram of substation, explain how vfd works?
Ques:- There are 3 sticks placed at right angles to each other and a sphere is placed between the sticks . Now another sphere is placed in the gap between the sticks and Larger sphere . Find the radius of smaller sphere in terms of radius of larger sphere.
Ques:- 15 people entered a theater before Sujit. 7 people entered the theater between Sujit and Suraj and 20 people entered the theater after Suraj. If Suraj entered the theater before Sujit then how many people are there in the theater?
Ques:- If you were into sales, what would you spend more time on, achieving your sales target or creating a good customer experience?
Recent Answer : Added by Krina Naik On 2022-09-02 17:03:36:

Both simultaneously because sales is the revenue generation team which is necessary for the commercial growth of the company whereas customer loyalty is again important for a company to go for long-term growth which is why good and satisfactory customer experience is necessary.

Ques:- A car covers a certain distance taking 7 hours in forward journey. During the return journey, speed was increased by12 kmph and it takes 5 hours. What is total distance covered?
Recent Answer : Added by Ashwin wankhede On 2021-08-06 04:58:04:

d=7s—–equation 1
d=5(s+12)
7s=5(s+12)
7s=5s+60
2s=60
s=30
from equation 1
d=7*30
d =210km

Ques:- X, Y, Z enter into a partnership investing Rs. 35,000, Rs. 45,000 and Rs. 55,000 respectively. The respective shares of X, Y, Z in annual profit of Rs. 40,500 are:
Recent Answer : Added by Supriya p On 2022-09-28 17:42:52:

X share is 10500
Y share is 13500
Z share is 16500

Ques:- c=a/b ; a-1=c What is the relation between a&b
Recent Answer : Added by Admin On 2020-05-17 11:59:44:

c=a/b
c=a-1
=>b=a/c
=>b=a/a-1

Ques:- Which of the following fractions is less than 1/3(a) 22/62 (b) 15/46(c) 2/3(d) 1
Recent Answer : Added by Anjum Parveen On 2022-03-09 16:31:41:

15/46=0.32

Ques:- I have changed 4 jobs in 5years, whenever i am facing interview they are asking me why you changed so many companies?

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