Science and Technology - General Knowledge Questions

1 .

The closest algal relatives of land plants are

charophytes

chrysophytes

rhodophytes

bacillariophytes

Correct Answer : charophytes

The charophytes are the extant group of green algae that are most closely related to modern land plants.

2 .

The concept of carbon credit originated from

Earth Summit, Rio de Janeiro

G-8 Summit, Hciligendamm

Kyoto Protocol

Montreal Protocol

Correct Answer : Kyoto Protocol

The concept of carbon credit for manufacturers originated with the Kyoto Agreement (Protocol) of 1997.

3 .

What molecule makes the trunk of a tree sturdy?

Glucose

Fructose

Cellulose

Disaccharide

Correct Answer : Cellulose

Cellulose is closely related to sugar and rated as a carbohydrate, which means that it is a compound of carbon, hydrogen and oxygen. The woody trunk of a tree is no more than dead cell walls.

Trunk of a tree refers to the main wooden axis of a tree that supports the branches and is supported by and directly attached to the roots. The molecule that makes it sturdy is cellulose.

4 .

The Study of Universe is called

Cosmetology

Cosmology

Universology

Petology

Correct Answer : Cosmology

Cosmology is the scientific study of the large scale properties of the universe as a whole. It endeavors to use the scientific method to understand the origin, evolution and ultimate fate of the entire Universe.

Depending on the outcome of the observations, the theories will need to be abandoned, revised or extended to accommodate the data. The prevailing theory about the origin and evolution of our Universe is the so-called Big Bang theory.

5 .

What is Iron Ore used for?

Aluminium

Brass

Copper

Steel

Correct Answer : Steel

The primary use of iron ore is in the production of iron. Most of the iron produced is then used to make steel. Steel is used to make automobiles, locomotives, ships, beams used in buildings, furniture, paper clips, tools, reinforcing rods for concrete, bicycles, and thousands of other items.

6 .

Which of the following causes tornadoes?

dry climates

condensation

stationary fronts

wind shear

Correct Answer : dry climates

Tornadoes form when warm, humid air collides with cold, dry air.

The denser cold air is pushed over the warm air, usually producing thunderstorms. The warm air rises through the colder air, causing an updraft. The updraft will begin to rotate if winds vary sharply in speed or direction.

As the rotating updraft, called a mesocycle, draws in more warm air from the moving thunderstorm, its rotation speed increases. Cool air fed by the jet stream, a strong band of wind in the atmosphere, provides even more energy.

7 .

Study of teeth is called

Ornithology

Odontology

Orthoepy

Pedagogy

Correct Answer : Odontology

The study or scientific study of the structure, development, and abnormalities of the teeth is called Odontology. The science that studies teeth and their surrounding tissues, especially the prevention and cure of their diseases is called Dentology.

8 .

The term "simple carbohydrates" refers to

dietary fiber

polysaccharides

monosaccharides and disaccharides

starch and glycogen

Correct Answer : monosaccharides and disaccharides

Simple carbohydrates are also called as Simple sugars. Monosaccharides and Disaccharides refers to simple carbohydrates.

9 .

The 'P' in DPT stands for

Pertussis

Pulmonary

Pneumonia

Pneumothorax

Correct Answer : Pertussis

DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis, and tetanus. Pertussis refers to whooping cough.

10 .

caffeine is also a what?

Barbiturate

Narcotic

Opioid

Psychoactive

Correct Answer : Psychoactive

Caffeine is also a psychoactive drug which alters the mood and conscious in our behaviour. It is widely consumed as a psychoactive drug.