Staff Selection Commission Combined Graduate Level Exam
Question : Who found an empirical relationship between the half-life of alpha decay and the energy of the emitted alpha particles in 1911?
Option 1: Fermi and Meitner
Option 2: Geiger and Nuttall
Option 3: Chadwick and Lawrence
Option 4: Soddy and Aston
Correct Answer: Geiger and Nuttall
Solution : The correct answer is Geiger and Nuttall.
Geiger and Nuttall discovered an empirical relationship between the half-life of alpha decay and the energy of the alpha particles emitted in 1911. Geiger and Nuttall created the first empirical formula for calculating alpha decay half-lives
Question : Direction: The table given below shows the percentage of literate people in 6 cities. This table also shows the ratio of males to females among literate people.
Percentage of literate people of any city = $\frac{\text{Literate people of the city}}{\text{Total population of the city}} × 100$ The total population of city 6 is 2,00,000 and the total population of city 2 is 2,20,000. What is the respective ratio of literate males of city 2 and literate females of city 6?
Option 1: 348 : 595
Option 2: 255 : 199
Option 3: 595 : 348
Option 4: 199 : 255
Correct Answer: 595 : 348
Solution : In city 6, there are 58% of the 2,00,000 literate people, $=58 × \frac{200000}{100}=116000$ literate people The ratio of literate males to females in city 6 = $2:3$ ⇒ The number of literate females in city 6 is given as $3× \frac{116000}{(2 +
Question : Directions: In the following question, some parts of the sentence have errors, and some are correct. Find out which part of the sentence has an error. The number of that part is the answer. If a sentence is error-free, your answer is "No Error."
Susan said that she shall (1)/ try to attempt the task (2)/ to the best of her ability. (3)/ No Error (4)
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (1)
Solution : The error lies in the first part of the sentence.
The general rule states that "shall" is used in the first person, whereas "will" is used in all other cases. When we convert the sentence into reported speech, shall should be replaced with the
Question : Directions: Select the word pair that best represents a similar relationship to the one expressed in the pair of words given below. Energy : Joule
Option 1: Temperature : Hot
Option 2: Force : Watt
Option 3: Power : Horse
Option 4: Current : Ampere
Correct Answer: Current : Ampere
Solution : Given: Energy : Joule (Joule is the SI unit of energy.)
Let's check the options – First option: Temperature : Hot; The SI unit of temperature is Kelvin. Second option: Force : Watt; The SI unit of force is Newton. Third option: Power
Question : Directions: In the following question, some parts of the sentence may have some errors. Find out which part of the sentence has an error and select the appropriate option. If the sentence is free from error, select "No Error."
The value of the dollar (1) / declines as the rate (2) / of inflation raises. (3) / No Error (4)
Correct Answer: (3)
Solution : The error lies in the third part of the sentence.
"Raises" is an intransitive verb and is incorrect. Here "rises" is an appropriate transitive verb to use when referring to an increase in the rate of inflation.
Therefore, the correct sentence is "The value of
Question : Directions: In a certain code language, who are you is written as 432, they are you is written as 425, and they are dangerous is written as 295. How is dangerous written in that code language?
Option 1: 2
Option 2: 4
Option 3: 5
Option 4: 9
Correct Answer: 9
Solution : Given: 1. who are you→432 2. they are you→425 3. they are dangerous→295
By comparing all the three coded sentences, we find that – In sentences 1, 2, and 3, are and 2 are common. In sentences 1 and 2, you and 4 are common.
Question : Tachycardia is a condition characterized by
Option 1: heart-rate decreases from the normal
Option 2: heart-rate increases from the normal
Option 3: heart-beat stops
Option 4: heart fails to pump
Correct Answer: heart-rate increases from the normal
Solution : The correct answer is heart-rate increases from the normal
Tachycardia is a condition characterised by a faster-than-normal heart rate. Adults have a typical resting heart rate of 60 to 100 beats per minute. Tachycardia is defined as a heart rate that
Question : Directions: In these questions, a part of the sentence is in bold. Below are given alternatives to the bold part at 1, 2 and 3 which may improve the sentence. Choose the correct alternative. In case no improvement is needed your answer is (4).
You must complete this work up to Sunday.
(1) within Sunday
(2) by Sunday
(3) on to Sunday
(4) No Improvement
Option 1: 1
Option 2: 2
Option 3: 3
Option 4: 4
Correct Answer: 2
Solution : In this sentence, the phrase "up to Sunday" is not the appropriate way to indicate deadline. A suitable preposition is needed to convey the idea that the work should be finished before Sunday.
"By Sunday" is the correct alternative because by is used for the
Question : Directions: If 3 % 2 = 50, 2 % 4 = 60 then, what is the value of 5 % 4 = ?
Option 1: 16
Option 2: 9
Option 3: 90
Option 4: 20
Correct Answer: 90
Solution : Given: 3 % 2 = 50, 2 % 4 = 60, 5 % 4 = ?
Substitute + in place of % and multiply it by 10 – 3 % 2 = 50 is (3 + 2) × 10 = 5 × 10 = 50
Question : A chord of length 40 cm is drawn in a circle having a diameter of 50 cm. What is the a minimum distance of another parallel chord of length 30 cm in the same circle from a 40 cm long chord?
Option 1: 10 cm
Option 2: 15 cm
Option 3: 5 cm
Option 4: 20 cm
Correct Answer: 5 cm
Solution : Let C be the centre of the circle and AB and CD be the shorter and longer chords respectively. Since the minimum distance is required, the chords must be on the same side of the centre of the circle. AB = 30 cm and
The Question containing Inaapropriate or Abusive Words
Question lacks the basic details making it difficult to answer
Topic Tagged to the Question are not relevant to Question
Question drives traffic to external sites for promotional or commercial purposes
The Question is not relevant to User
And never miss an important update
