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General Knowledge for Competitive Exams

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Global Warming: Effects and Causes

1 day ago
Global Warming is the increase in Earth's mean surface temperature because of the effect of greenhouse gases. These gases absorb long wave radiations and warm the atmosphere, and this process is called as Greenhouse effect. It had led to many changes on the planet, such as rise in sea level; massive melting of snow and land ice, elevated heat content of the oceans, increased humidity, change in the timings of seasonal events, and many others. The main greenhouse gases, namely:Carbon dioxide (CO2); Methane (CH4); Nitrous oxide (N2O); Hydrofluorocarbons (HFCs); Perfluorocarbons (PFCs); and Sulphur hexafluoride (SF6).

What is the difference between LED and CFL bulbs?

Jan 11, 2018
We all use LEDs or CFL bulbs. But do you know what is the difference between LED and CFL bulbs? Which bulb is better LED or CFL, in which power consumption is less, which material is used in making it and how it works, etc. Through this article we will try to study about these LED and CFL bulbs.

How ISRO will make Indian Railways safe?

Jan 10, 2018
ISRO is using its Indian Regional Navigation Satellite System (IRNSS) or NaVIC (Navigation with Indian Constellation) in Indian Railways with the help of joint collaboration between ISRO and Indian Railways to make railways safe or to curb accidents. This article deals with the satellite system used by ISRO for Indian Railway safety, what is IRNSS system, how IRNSS or NaVIC system work, GPS is better or IRNSS is also discussed in the article.

How Gravitational Force holds the Solar System together?

Jan 8, 2018
The gravitational force of earth is responsible for holding the atmosphere above the earth. It is also the gravitational force of earth which keeps us firmly on the ground. Various objects attract each other due to gravity only. This article deals what is gravitational force and how this force holds the Solar System together.

What happens on internet in 1 minute

Jan 5, 2018
Today we are living in the era of social media. The population of the world has crossed 7.47 billion out of which 4.9 billion have mobile phones. A huge $751522 is spent on online shopping in a minute. This article is showing some very interesting facts about the activities occurring in a minute on internet.

What is momentum and its importance in everyday life?

Jan 4, 2018
Momentum is about every activity that involves motion. It is an essential concept of physics and is also used in everyday life. How momentum works, why momentum is important, concept of momentum with examples etc. are discussed in the article.

List of the diseases caused due to Food Poisoning

Dec 29, 2017
Food poisoning is caused due to adulteration and this can often be increased due to changing of place, changing food, etc. The main reason for food poisoning is eating contaminated food. Symptoms of food poisoning include upset stomach, nausea, vomiting and abdominal cramps. Through this article we will learn about the list of diseases caused by contaminated food or by food poisoning.

Why Speed and Velocity are not always equal in magnitude?

Dec 29, 2017
Speed of a body is the distance travelled by it per unit time and Velocity of a body is the distance travelled by it per unit time in a given direction. This article deals with why Speed and Velocity are not always equal in magnitude and illustrated with the help of an example.

What is the difference between Uniform and Non-Uniform Motion?

Dec 28, 2017
The movement of a body is motion. The common characteristic of the moving body is that they change their position with time. This article deals with the motion, its types like uniform and non-uniform motion with examples for better clarity.

How Plants and Animals are sensitive to pH Changes?

Dec 22, 2017
pH plays an important role in many activities of our everyday life. pH of a solution is inversely proportional to the concentration of hydrogen ions in it. pH of a solution tells whether the solution is acidic or not. So, we can say that it is important for the survival of plants and animals. This article deals about how plants and animals are pH sensitive.

Important Laws of Physics

Dec 22, 2017
Physical laws play a crucial role in Science and are considered as fundamental. Many laws of physics are built after various research or some are a modification of existing laws and theoretical research. This article deals with important laws of physics which will help in the preparation of various examinations.

List of Ductless Glands present in the Human Body

Dec 21, 2017
Ductless glands which are also known as internally secreting glands or endocrine glands secrete their products or hormones directly into the blood stream in response to instructions from the brain. Let us find out how these ductless glands functions, where they are located in the human body, what they secrete.

List of important Chemical Processes

Dec 19, 2017
The chemical process is an important phenomenon in chemical industry, which involves various chemical reactions due to which new chemical compounds are formed. This article deals with various chemical processes, how they work, how new chemical compounds are formed etc. are discussed in this article.

Do you know which Human Body Organs can be donated

Dec 4, 2017
The organ system functions according to the particular organ like digestive system; it processes the food, etc. Organism’s survival depends upon the integrated activity of the organs and organ system with that of endocrine and nervous system. This article deals about the list of human body organs and tissue that can be donated and the criteria of their donation.

What is cytology and some terms related to it

Nov 29, 2017
Cytology is also known as cell biology. It is the study of cell. It is important for the researchers or biologists in generating vaccines, medicines etc. This article deals with the importance of cytology, what is cytology and various terms related to it.

Interesting facts about world's largest Solar Power Plant

Nov 27, 2017
At the present time, whole world is facing the threat of global warming. Therefore, scientists of the entire world are promoting the use of non-conventional sources of energy, due to which new solar plants are being set up to create solar energy in different countries of the world. In this article we are giving details of the world's largest solar power plant.

Zero invented in India when and why

Nov 22, 2017
Zero is a symbol for the concept of nothing or having nothing. Now a day’s zero both as a numeric symbol and a concept help us to do calculus, in solving complicated equations and is the basis of computer. This article deals with the invention of Zero in India, how and when it took place.

Do you know why Oil and Water does not mix together?

Nov 17, 2017
We have seen many times and even we have tried at our homes that when we put oil in water and stir it, eventually they separate in to two distinct layers. Why is it so? Through this article we will study why oil and water does not mix together, why oil is sticky and why oil floats on water.

What are the suicidal bags of cell?

Nov 16, 2017
Lysosomes are found in animal cell, they are also known as suicidal bags of the cell. A human cell contains around 300 lysosomes. They not only digest large molecules but also responsible for breaking down and getting rid of waste products of the cell. They have enzymes which allow them to carry out these processes. Let us find out how lysosymes look, what are its function, why they are known as suicidal bags of the cell etc.

1000+ GK Question and Answers on General Science

Nov 14, 2017
General Science plays an important role for Exams like IAS, State PSC, SSC and other similar competitive exams. Here, we are giving a complete set of General Science Questions & Answers in the form of Practice Sets that consists of 1000+MCQs. The questions in different competitive examination are such that to test the aspirants general awareness of a variety of disciplines.

Why Smartphone light is dangerous for health

Nov 13, 2017
Nowadays Smartphone are used by everyone, which has become an important part of life. With the help of these small devices we connect and update with each other, even this has become a great source of entertainment. The Smartphone has many benefits, but it can’t be ignored that the light coming out of the phone can cause significant damage to the health. Let's see how this light of the Smartphone is harmful for health.

Composition and Functions of Blood

Nov 10, 2017
Blood is a red coloured liquid which circulates in our body. It is red in colour because it contains a red pigment called haemoglobin in its red cells. Blood is a connective tissue, it consists of four things namely Plasma, Red blood corpuscles (Red blood cells or RBCs), White blood corpuscles (White blood cells or WBCs) and platelets. Blood helps in transportation of substances, protect against diseases and regulates body temperature.

What is SMOG and how it is harmful for us?

Nov 8, 2017
Smog is derived from two words i.e. smoke and fog which is also described as a mixture of various gases with dust and water vapour and makes breathing difficult. In 17 years such an alarming situation raised in Delhi which raised health emergency. In this article we will discuss about the sources of smog, how it affects our health and how it is formed; what are the necessary precautions that we can take etc.

Why Lichens are important for environment?

Nov 7, 2017
Lichens are found world-wide and mainly grow on various places like on the bark of tree, walls, rocks, gravestones, roofs and soil etc. It plays an important role in making the environment free from pollution. This article deals why lichens are necessary for the environment, where it is found and what are its economic importance.

What is the role of Helium in Medicines?

Nov 6, 2017
Helium is the lightest noble gas. It consists of various physical and chemical properties due to which it is used in respiratory ailments therapies. Due to its inert gas property it helps in neuroprotection, in surgery, in MRI technique etc. This article deals with the role of helium in medicines and how it is used in various techniques for the treatment of patients.

Is Nitrogen important for Human Body?

Nov 1, 2017
Nitrogen is represented by the symbol N. It is abundant in the environment but humans can’t use it directly from air or soil but depends upon green plants and microbes to convert it in to the usable form for using it. But the question arises that why Nitrogen is important for humans and how they use it etc. are discussed in this article.

How Silk is produced from Silkworm?

Oct 31, 2017
Silkworm is an insect that makes silk. Its scientific name is Bombyx Mori. The world's first practice of silk production was started in China. Clothes made from Silk and other things are liked by everyone because of its texture. But the question arises, how silkworm produces silk is discussed in this article.

How many types of Kidney Stones are formed in Human Body

Oct 31, 2017
Kidney stone is a common disease. It causes severe pain in back or in abdomen. These stones are made up of minerals and salts deposit in the form of crystals and formed anywhere in the urinary tract. Do you know how many types of kidney stones are formed in the human body and how they occur? What are the symptoms of the formation of Kidney stones etc. are discussed in this article.

List of Phenomena related to Sound

Oct 27, 2017
Sound is all around us but do you know what is sound. It is a type of energy made up by the vibrations produced. It travels as a wave through a medium like liquid, solid or gas but it does not exist in a vacuum of space. This article deals with the various phenomena of sound with explanation for better understanding.

What is the function of hydrogen in the human body?

Oct 26, 2017
Hydrogen is the first element of the periodic table. The most important function of hydrogen in the human body is to keep you hydrated. Water is made up of hydrogen and oxygen and is absorbed by the cells of the body. Therefore, it is a crucial element which is used not in our body but also as a fuel, in military weapons etc. This article deals with the importance and function of hydrogen in the human body.

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