An element _ZS^A decays to ₈₅R²²² after emitting 2 α particles and 1 β particle. Find the atomic number and atomic mass of the element S.

The 1914 and 1939 Wars that engulfed almost the entire world, were known as World Wars due to its unprecedented impact and damage. In this context, Explain the consequences of the Second World War...

A pulley system has three pulleys. A load of 120N is overcome by applying an effort of 50N. Calculate the Mechanical Advantage and Efficiency of this system.

Aluminum carbide reacts with water according to the following equation:

Al₄C₃ + 12H₂O → 4Al (OH)₃ + 3CH₄

1. What mass of aluminum hydroxide is formed from 12 g of aluminum carbide?
2. What volume
...

Ionic compounds have a high melting point.

Calculate the number of gram atoms in 4.6 grams of sodium (Na = 23).

State any one condition when the Parliament can legislate on subjects in the State List.

Why are South Indian rivers not ideal for the inland water transport?

Differentiate between the following pairs on the basis of what is mentioned in brackets:

1. Active Transport and Diffusion [significance in plants]
2. Demography and Population density [Definition]
3. Antibiotic
...

Give two ways by which the trees that are found here have adapted to the climate.

Name the Signatory Countries of the Triple Alliance

The pituitary hormone which stimulates contraction of uterus during child birth.

Read the extract given below and answer the questions that follow:

But a caged bird stands on the grave of dreams
His shadow shouts on a nightmare scream
His wings are clipped and his feet are tied

A pair of corresponding chromosomes of the same size and shape, one from each parent. 

Give appropriate biological / technical term.

State any three qualifications required for a candidate to be elected as the Vice-President of India.

Write balanced chemical equations to show:

1. The oxidizing action of concentrated Sulphuric acid on Carbon.
2. The behavior of H₂SO₄ as an acid when it reacts with Magnesium.
3. The dehydrating property of
...