SAT (Stage-1) M...

During fractional distillation of petroleum, the temperature is the highest in the lower parts of the fractional column. Different components of the mixture are collected at different levels in the fractional column.

Which of the following statements is correct, in context to refining of petroleum?

Non-metals are

____________ are examples of ferrous alloys.

Which of the following is not a metalloid?

Find the amount (volume in ml) of potassium hydroxide present in 15% (v/v) solution of potassium hydroxide if it contains 165 ml of water.

A mixture of water and alcohol can be separated by

According to the Lowry-Bronsted concept of acids and bases, an acid is a proton donor and a base is a proton acceptor.

Which among the following can behave both as a Bronsted acid and a Bronsted base?

A. NH₃
B. H₂O
C. HCl
D. HCN

Going by the quantum mechanics model of the structure of an atom, the electrons in which of the following orbitals will have the same n + l values, where 'n' is the principal quantum number and 'l' is the azimuthal quantum number?

A. 2p and 3s
B. 1s and 2p
C. 3p and 4s
D. 3d and 5s

Which of the following compounds having the formula C₅H₁₀ will produce a clean blue flame when burnt in air?

Nitrogen and hydrogen react to form ammonia as follows:

What is the mass of NH₃ formed if a given amount of N₂ gas is reacted with excess of H₂, and if the volume of the N₂ gas at STP is 56 L?

In the group of alkali metals, the physical quantity that decreases down the group is:

A species has 2 units of negative charge and the number of neutrons is 2 more than the the number of protons. If the mass number of the species is 34, identify the species and the number of electrons.

The combustion and oxidation products of ethanol respectively are:

Meristematic cells contain all of the following organelles, except:

Suberin is generally found in