RRB-NTPC 2021 Mathematics
Practice subject-wise previous year questions
Question 1126
Arithmetic
Which acid was first created from inorganic materials by Hermann Kolbe in 1845?
A
Sulphuric acidB
Formic AcidC
Citric AcidD
Acetic AcidQuestion 1127
Arithmetic
Western disturbances mainly affect the weather of which region in India?
A
North-West IndiaB
Coastal Andhra PradeshC
Eastern GhatsD
Deccan PlateauQuestion 1128
Arithmetic
Which of the following subjects was NOT a part of the Transferred Subjects under the Government of India Act of 1919?
A
Local self-governmentB
PoliceC
HealthD
EducationQuestion 1129
Arithmetic
Which of the following properties generally increases across a period (left to right) in the periodic table?
A
ReductionB
Ionisation enthalpyC
Metallic characterD
Atomic radiusQuestion 1130
Arithmetic
Who was appointed as the Chairman of the Union Public Service Commission (UPSC) in 2021, succeeding Preeti Sudan?
A
Sanjay MitraB
Anil SwarupC
Ajay KumarD
Rajiv GaubaQuestion 1131
Arithmetic
Yagnavarman, Sardulavarman and Anantavarman were the kings of which of the following kingdoms?
A
Magadha GuptasB
Maitrakas of ValabhiC
Maukharis of KanaujD
Pushyabhutis of ThanesarQuestion 1132
Arithmetic
Before becoming the Chief Justice of India, Justice BR Gavai served in which court?
A
Delhi High CourtB
Allahabad High CourtC
Bombay High CourtD
Madras High CourtQuestion 1133
Arithmetic
What is the purpose of the submarine cable project launched by the Indian National Centre for Ocean Information Services (INCOIS) in 2021?
A
Improve underwater defense systemsB
Support ocean tourismC
Increase internet speed in coastal areasD
Enhance long-term Indian Ocean observationsQuestion 1134
Arithmetic
A solution with a pH of 2 is how many times more acidic than a solution with pH 4?
A
10 timesB
2 timesC
100 timesD
200 timesQuestion 1135
Arithmetic
The spread of the Green Revolution technology enabled India to achieve self-sufficiency in ________.
A
sugarcaneB
vegetablesC
oil seedsD
food grainsQuestion 1136
Arithmetic
Which postulate of Dalton's atomic theory explains the Law of Definite Proportions?
A
Atoms are indivisible and indestructible.B
Atoms of different elements have different masses and properties.C
Atoms of the same element are identical in mass and size.D
Atoms combine in simple whole-number ratios to form compounds.Question 1137
Arithmetic
Which ISRO mission, launched in May 2021, aims to enhance India's all-weather day-and-night Earth observation capabilities?
A
INSAT-3DSB
Cartosat-3C
RISAT-1BD
EOS-09Question 1138
Arithmetic
Who among the following translated the book 'Heart Lamp' from Kannada to English, for which the author won the prestigious International Booker Prize in May 2021?
A
Manorama MishraB
Deepa BhasthiC
Chitra Banerjee DivakaruniD
Geeta SinghQuestion 1139
Arithmetic
Which Article of the Indian Constitution empowers the Parliament and State Legislatures to make laws for the whole or any part of the territory of India?
A
Article 250B
Article 245C
Article 249D
Article 256Question 1140
Arithmetic
What happened to employment opportunities after the 1991 reforms?
A
Stayed the sameB
Increased, especially in private and service sectorsC
Decreased in all sectorsD
Only grew in agricultureQuestion 1141
Arithmetic
The largest area of the Great Indian Desert in India is located in which state?
A
GujaratB
RajasthanC
PunjabD
HaryanaQuestion 1142
Arithmetic
Which agency on 2021 authorised to share information with the Enforcement Directorate (ED) under the Prevention of Money Laundering Act to combat cyber fraud?
A
Indian Cyber Crime Coordination Centre (I4C)B
Central Bureau of Investigation (CBI)C
National Cyber Crime Reporting Portal (NCRP)D
Cyber and Information Security Division (CISD)Question 1143
Arithmetic
In January 2021, which state cricket association unveiled plans to construct the largest cricket stadium in India, with a seating capacity of 1.25 lakh spectators?
A
Odisha Cricket LeagueB
Punjab Cricket AssociationC
Delhi District Cricket AssociationD
Andhra Cricket AssociationQuestion 1144
Arithmetic
Which of the following is a mode of losing Indian citizenship?
A
RenunciationB
BirthC
RegistrationD
NaturalizationQuestion 1145
Arithmetic
In which year was the Paris Agreement adopted?
A
2015B
2013C
2016D
2017Question 1146
Arithmetic
In the context of British plantations in India, what does the term 'bigha' refer to?
A
A unit of measurement of landB
A plant that replaced indigo in BritainC
An agreement made with the ryotsD
A revenue estate which has one or more villagesQuestion 1147
Arithmetic
Which of the following accurately represents the two main components of the CPU and their functions?
A
Monitor and Keyboard – Control the speed of data processingB
RAM and ROM – Store data and instructions permanentlyC
HDD and SSD – Perform data input and output tasksD
ALU and CU - Perform calculations and control all computer operationsQuestion 1148
Arithmetic
What are quaternary activities mainly associated with?
A
TransportationB
Industrial workC
Information and researchD
AgricultureQuestion 1149
Arithmetic
Which of the following Five-Year Plans was based on the Harrod-Domar Model?
A
FirstB
ThirdC
FifthD
SeventhQuestion 1150
Arithmetic
In FIFO scheduling, which process is executed first?
A
The process with the shortest execution timeB
The process that arrives firstC
The process with the highest priorityD
The process that arrives last