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Question : In which year did John Alexander Newlands propound a new concept of the 'Law of Octaves' proposing the periodicity of chemical elements arranged in order of atomic weight?
Option 1: 1860
Option 2: 1865
Option 3: 1873
Option 4: 1870
Correct Answer: 1865
Solution : The correct option is 1865.
John Alexander Newlands proposed the "Law of Octaves" in 1865. According to the Law of Octaves, chemical elements display comparable properties after every eighth element when grouped in increasing atomic weight order.
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".
Hari was appointed leader (1) / of a group of young social workers (2) / that have accepted to help and develop the village in three months. (3) / No error (4)
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
Correct Answer: (3)
Solution : The error lies in the third part of the sentence.
When narrating events in the past, it's appropriate to use the past tense consistently. In this case, "had accepted" is more appropriate as past perfect tense is used for the action that happened earlier than
Question : Animals having open circulatory system possesses:
Option 1: coelenteron
Option 2: spongocoel
Option 3: pseudocoel
Option 4: haemocoel
Correct Answer: haemocoel
Solution : The correct option is haemocoel.
Animals with an open circulatory system frequently have a bodily cavity known as a "haemocoel" or "hemocoel". The haemocoel is a huge fluid-filled hollow that surrounds the body's organs. The circulatory fluid, termed hemolymph, is pushed into the haemocoel
Question : How many litres of water can a hemispherical tank of radius 2.1 m contain? (Take $\pi=\frac{22}{7}$)
Option 1: 18984
Option 2: 19324
Option 3: 18404
Option 4: 19404
Correct Answer: 19404
Solution : Given: $r = 2.1$ m = 210 cm Volume of a hemisphere = $\frac{2}{3}\pi r^3$ $= \frac{2}{3}\times \frac{22}{7} \times (210)^3$ cm3 $\because$ 1 litre = 1000 cm3 $= \frac{2}{3}\times \frac{22}{7} \times (21)^3$ litres = 19404 litres Hence, the correct answer is 19404.
Question : Directions: If in a certain code, BRIDGE is written as ACQSHJCEFHDF, what is the code of POWER?
Option 1: QOPNVXDFSQ
Option 2: OQNPVXDFQS
Option 3: OQNPVXEFRS
Option 4: QONPXVDFQS
Correct Answer: OQNPVXDFQS
Solution : Given: BRIDGE is written as ACQSHJCEFHDF
The previous and the next letter is written for the given alphabet in the word to obtain the required code. BRIDGE→AC/QS/HJ/CE/FH/DF = ACQSHJCEFHDF Similarly, POWER→OQ/NP/VX/DF/QS = OQNPVXDFQS
So, POWER is coded as OQNPVXDFQS. Hence, the second option is correct.
Question : Select the most appropriate synonym of the given word. Sequestered
Option 1: Polished
Option 2: Decorated
Option 3: Secluded
Option 4: Frequented
Correct Answer: Secluded
Solution : The correct choice will be the third option.
Sequestered: It means isolated or hidden away, often implying privacy or solitude.
Secluded: It means kept away from others, private, or hidden.
The meanings of the other options are:
Polished: It denotes smooth and shiny, refined or
Question : Directions: A paper is folded and cut as shown. How will it appear when unfolded?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution : When the given folded paper is unfolded, it will look like –
Hence, the second option is correct.
Question : Directions: If the second half of the given string is reversed, and then the first quarter of the new string is placed at the end, which of the following options would be in the middle? K18A4R2TE23N
Option 1: RN
Option 2: E3
Option 3: NE
Option 4: 2E
Correct Answer: 2E
Solution : Given: K18A4R2TE23N
According to the question, The second half of the given string is reversed→K18A4RN32ET2 The first quarter of the new string is placed at the end→A4RN32ET2K18
So, 2E is in the middle of the series. Hence, the fourth option is correct.
Question : Select the most appropriate idiom for the underlined segment in the given sentence.
When he made fun of the sage, who was already infuriated, it made a bad situation worse.
Option 1: Made them at the loggerheads
Option 2: Pulled someone's legs
Option 3: Added fuel to the fire
Option 4: Budged up
Correct Answer: Added fuel to the fire
Solution : The third option is the correct answer.
The phrase "it made a bad situation worse" suggests that the action of making fun of the sage intensified or exacerbated an already negative situation. Added fuel to the fire is an idiomatic expression
Question : Albert invested an amount of $x$ rupees in a fixed deposit scheme offering 10% per annum for the first year and 15% per annum for the second year and received an amount of Rs. 20,240 after two years. What is $x$ (in Rs.)?
Option 1: 15,000
Option 2: 16,000
Option 3: 14,000
Option 4: 18,000
Correct Answer: 16,000
Solution : Let the $x$ be Rs. 100. We know, Simple interest = $\frac{\text{Principal × Rate × Time}}{100}$ Now for the first year, interest of 100 rupees at 10% per annum is = $\frac{100×10×1}{100}$ = Rs. 10 and for the second year interest of (100 + 10)
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