Daily Quiz: UPSC Prelims Marathon – February 14, 2019

Statement 1 is correct. The Budapest Convention provides for the criminalisation of conduct, ranging from illegal access, data and systems interference to computer-related fraud and child pornography, procedural law tools to make investigation of cybercrime and securing of e-evidence in relation to any crime more effective, and international police and judicial cooperation on cybercrime and e-evidence.

Statement 2 is incorrect. Currently, India is not a member of this convention. The Convention has 56 members, including the US and the UK.

All are example of chemical change.

Chemical changes involve chemical reactions and the creation of new products. Typically, a chemical change is irreversible.

In contrast, physical changes do not form new products and are reversible. Examples of physical change include: change of state, creation or separation of a mixture, physical deformation such as cutting, change in color by addition of dye.

Following are the few examples of chemical change:

Rusting of iron

Combustion (burning) of wood

Metabolism of food in the body

Mixing an acid and a base, such as hydrochloric acid (HCl) and sodium hydroxide (NaOH)

Cooking an egg

Digesting sugar with the amylase in saliva

Mixing baking soda and vinegar to produce carbon dioxide gas

Baking a cake

Electroplating a metal

Using a chemical battery

Explosion of fireworks

Rotting of bananas

Grilling a hamburger

Souring of Milk

Statement 1 and 3 are incorrect.

Statement 2 is correct. Antioxidants are man-made or natural substances that may prevent or delay some types of cell damage. Antioxidants are found in many foods, including fruits and vegetables. They are also available as dietary supplements. Examples of antioxidants include

Beta-carotene

Lutein

Lycopene

Selenium

Vitamin A

Vitamin C

Vitamin E

Vegetables and fruits are rich sources of antioxidants. There is good evidence that eating a diet with lots of vegetables and fruits is healthy and lowers risks of certain diseases. But it isn’t clear whether this is because of the antioxidants, something else in the foods, or other factors.

High-dose supplements of antioxidants may be linked to health risks in some cases. For example, high doses of beta-carotene may increase the risk of lung cancer in smokers. High doses of vitamin E may increase risks of prostate cancer and one type of stroke. Antioxidant supplements may also interact with some medicines. To minimize risk, tell you of your health care providers about any antioxidants you use.

Any physical quantity that has both magnitude (size and direction, such as Momentum, Displacement, Velocity, Acceleration, Force, as distinct from a scalar quantity such as speed, density, or mass, which has magnitude but no direction.

Centrifugation is the process of separating substances of different densities by the use of a centrifugal force. It is used in washing machines to separate water particles from clothes while drying in washing machines. More dense components of the mixture migrate away from the axis of the centrifuge whereas lens dense components of the mixture migrate or move towards the axis

The halogens are the family of chemical elements that includes fluorine ( atomic symbol F), Chlorine (CI), bromine (Br), iodine (I), and astatine (At). The halogens are the most reactive because of high electro negativity, small size of atom and high oxidizing power.

Oxygen transportation in a human body takes place in the sequence of Lungs, Blood and Tissue.