SSC CHSL 2017 PYQs

Question 1

Venn diagram was invented by

Accepted Answer

John Venn, a British logician and philosopher, is credited with inventing the Venn diagram, a widely used tool in set theory and logic.

Question 2

Electric tram was invented by?

Accepted Answer

Fyodor Pirotsky, a Russian engineer, invented the first electric tram in 1880. This is a direct factual recall question.

Question 3

Electric chair was invented by

Accepted Answer

Alfred P. Southwick, a dentist, invented the electric chair in 1881. It was first used for executions in New York in 1890.

Question 4

Which of the following is induced by Oncogene?

Accepted Answer

Oncogenes are genes that have the potential to cause cancer. They promote uncontrolled cell growth, leading to tumor formation and the development of cancer.

Question 5

Medulla oblongata is a part of which of the following?

Accepted Answer

The medulla oblongata is a crucial part of the brainstem, responsible for regulating vital involuntary functions like breathing and heart rate.

Question 6

Scurvy (bleeding of gums) is caused by the deficiency of  which vitamin?

Accepted Answer

Scurvy is a disease characterized by bleeding gums, weakness, and joint pain. It is directly caused by a prolonged deficiency of Vitamin C (Ascorbic Acid).

Question 7

The outermost layer of skin is

Accepted Answer

The epidermis is the outermost layer of the skin, providing a protective barrier against the environment. It is primarily composed of keratinocytes.

Question 8

Diabetes is caused by

Accepted Answer

Diabetes is primarily caused by the body's inability to produce enough insulin or to use insulin effectively, leading to high blood sugar levels.

Question 9

Deficiency of which of the following causes non-clotting  of blood?

Accepted Answer

Vitamin K is essential for the synthesis of clotting factors in the liver. Its deficiency directly impairs the blood clotting process, leading to excessive bleeding.

Question 10

What is the total number of bones in the human body?

Accepted Answer

The adult human skeletal system is composed of 206 bones. This is a fundamental fact about human anatomy.

Question 11

Which of the following is a symptom of haemophilia?

Accepted Answer

Haemophilia is a genetic disorder where the blood's ability to clot is severely reduced, leading to prolonged bleeding after injury. Therefore, 'no clotting of blood' is the correct symptom.

Question 12

Brain fever is a disease spread through which of the following?

Accepted Answer

Brain fever, commonly known as Japanese Encephalitis, is primarily transmitted to humans through the bite of infected mosquitoes, particularly from the Culex species.

Question 13

Azadirachata indica is the scientific name of

Accepted Answer

Azadirachta indica is the widely recognized scientific name for the Neem tree, known for its medicinal properties.

Question 14

...........is a typically onecelled, reproductive unit capable of  giving rise to a new individual without sexual fusion.

Accepted Answer

A spore is a reproductive cell, typically one-celled, that can develop into a new organism without sexual fusion, common in fungi, algae, and plants.

Question 15

Achras sapota is the scientific name of

Accepted Answer

Achras sapota is the botanical name for Chiku, also known as Sapodilla. This is a direct recall of a scientific name.

Question 16

Which plants have root nodules?

Accepted Answer

Leguminous plants form root nodules containing nitrogen-fixing bacteria (Rhizobium). This symbiotic relationship allows them to convert atmospheric nitrogen into usable forms for plant growth.

Question 17

Tectona grandis Linn is the scientific name of

Accepted Answer

Tectona grandis Linn is the scientific name for Teak, a tropical hardwood tree. This is a direct recall of a common scientific name.

Question 18

Carotene in fruits and vegetables gives it which color?

Accepted Answer

Carotene is a pigment responsible for the vibrant orange and yellow colors seen in many fruits and vegetables, such as carrots and pumpkins.

Question 19

The process of producing energy in plants is known as

Accepted Answer

Plants produce their own food, and thus energy, through the process of photosynthesis, using sunlight, water, and carbon dioxide.

Question 20

Emblica officinalis is the scientific name of

Accepted Answer

Emblica officinalis is the botanical name for Amla, also known as Indian gooseberry. Recognizing common scientific names is key here.