General Science

A change during a chemical reaction in which one or more new substances are formed is called is – chemical change

Energy from food is usually measured in – Joules or Calories

A light sensitive compound used in the photograph is called – Silver Bromide

The solutions which do not change the colour of either red or blue litmus are known as – Neutral solutions

The study of the productive of better offspring by the careful selection of parents is known an – Eugenics.

The process of depositing a layer of zinc on iron is called – Galvanisation

The iron pipes we use in our homes to carry water are galvanised to prevent – Rusting

Which blood cells carry oxygen around the body of living organism? – Red Blood Cells

Stainless steel is made by mixing iron with carbon and metals like chromium – Nickel and Manganese

When carbon dioxide is passed through lime water, it turns milky due to the formation of – calcium carbonate

The colour of a humus skin is determined by the level of pigment that the body produces – Melanin

If one leaves a piece of iron in the open for some time, it acquires a film of brownish substance. The substance is called – Rust

Which types of coal contain maximum carbon content? – Anthracite

Red blood cells are created inside the – Bone marrow of bones

The word acid comes from the Latin word ‘acere’ which means – sour

Vitamin C present in Amla and Citrus fruit. The chemical name of the Vitamin C is – Ascorbic acid

China rose indicator turns acidic solutions to dark pink (magenta) and basic solutions to – Green

It is evident that when the solution is basic phenolphthalein gives a – Pink colour

When the solutions is acidic phenolphthalein remains – colourless

Excessive use of chemical fertilizers make the soil – Acidic

When an ant bites, it injects an acidic liquid into the skin. Name of the  acidic liquid is – Formic acid.

The effect of the acid can be neutralised by rubbing moist baking soda (sodium hydrogen carbonate) or calamine solution which contains – zinc carbonate

Each cell in our body contains an acid, the – Deoxyriboncleic acid (DNA)

The uppermost horizon of soil is generally dark in colour as it is rich in – Humus and Minerals

Which substance makes the soil fertile and provides nutrients to the growing plants? – Humus

Topics to be covered from Hindu Paper dated on Wednesday, February 27^th 2013

Topic	Page No.
Old Faithful does it again	10
How the other half dries	11
How Ethiopians benefit from Indian (and other) land investors	11

Topics to be covered from Hindu Paper dated on Thursday, February 28^th 2013

Topic	Page No.
A realistic assessment	12
Time to call the corporate bluff’	12
It’s not prudential to bank on discretion	13
Jubilation at Indus win is premature	13
Carbon taxes will lead to heavy GDP losses, warns Economic Survey	13
India ‘economic linchpin’ in Afghanistan, says Blake	14
Full page	16 & 17
Indian role in SKA	18