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What are MNCs? Explain

MNC is the Multinational Corporation. MNC relates to a corporation that operates from one nation in which it is headquartered and operates in two... View Article

What is meant by (i) elements (ii) compound and (iii) mixtures. Write down the names of two elements, two compounds and two mixtures.

(i) Element: A substance that cannot split into two or more simpler substance by chemical methods. Examples: carbon and oxygen are non-metals,... View Article

What is the main difference between sperms and eggs of humans? Write the importance of this.

Difference between Ovum and Sperm Sperm Definition: Sperm is the male gamete Motility: Motile Size: The smallest cell in the human body... View Article

What is forward biasing and reverse biasing of a diode?

Forward bias: The positive terminal of the voltage potential is connected to the p-type while the negative terminal is connected to the n-type.... View Article

In which group of animals coelom is filled with blood (A) Arthropoda (B) Annelida (C) Nematoda (D) Echinodermata

Arthropoda Annelida, Nematoda and Echinodermata don’t have blood and in Arthropoda coelom is filled with blood. Hence, the correct option... View Article

Glomerular filtrate contains (A) Blood without blood cells and proteins (B) Plasma without sugar (C) Blood with proteins but without cells (D) Blood without urea

Glomerular filtrate contains blood without blood cells and proteins Hence, the correct option is (A)... View Article

Most hazardous metal pollutant of automobile exhaust is (a) Mercury (Hg) (b) Lead (Pb) (c) Cadmium (Cd) (d) Copper (Cu)

The most hazardous metal pollutant of automobile exhaust is 'lead'. Lead is the most immobile heavy metal pollutant. Due to its immobility lead... View Article

Answer the following questions on the Battle of Plassey and Buxar: (a) Who was the Nawab of Bengal in 1757? (b) Who introduced the subsidiary Alliance? (c) Name the policy of Lord Dalhousie (d) When was Queen Victoria’s proclamation issued?

(a) Siraj-Ud-Daulah was the Nawab of Bengal in 1757 (b) The subsidiary alliance in India was planned by Lord Wellesley but this term was... View Article

Two dice are thrown at the same time. Find the probability of getting (i) same number on both dice (ii) different number on both dice

When two dice are thrown simultaneously, the total number of possible outcomes = 36 (i) Same number on both dice Possible outcomes are (1,1)... View Article

Ethers are isomeric with: (A) aldehydes (B) ketones (C) both aldehydes and ketones (D) alcohols

Ethers are isomeric with alcohols. Hence, the correct option is (D)... View Article

Cell wall consists of (a) Lignin, hemi cellulose, pectin and lipid (b) Lignin, hemi cellulose, pectin and cellulose (c) Lignin, hemi cellulose, protein and lipid (d) Hemi cellulose, cellulose, tubulin arid lignin

Cell wall consists of lignin, hemi cellulose, pectin and cellulose Hence, the correct option is (b) Learn more: Cell Wall... View Article

Tendon is made up of (A) Mainly collagen fibres (B) Inelastic connective tissue fibres (C) Elastic connective tissue fibres (D) Inelastic and elastic connective tissue fibres

Mainly collagen fibres A tendon is a fibrous connective tissue which binds muscle to bone. Tendon is a tissue that connects muscle to bones in... View Article

Red Data Book deals with (A) Organisms on the verge of extinction (B) Endemic plants (C) Organisms showing photoperiodism (D) Organisms that are extinct

Red Data Books deals with organisms on the verge of extinction The Red Data Book is a public document that is created for recording endangered... View Article

CO is isoelectronic with (a) NO+ (b) N2 (c) SnCl2 (d) NO2

CO is isoelectronic with NO+ and N2 CO has 14 electrons, 8 from oxygen and 6 from carbon. NO has 15 electrons, 8 from oxygen and 7 from... View Article

Write two examples of metallic soilds

The solids composed of metal atoms that are held together by metallic bonds are known as 'metallic solids'. The examples of metallic solids are... View Article

What is the IUPAC name of CH3CH2CHO?

The IUPAC name of CH3-CH2-CHO is 'Propionaldehyde or Propanal'... View Article

What is the mass of carbon dioxide which contains the same number of molecules as are contained in 40 g of oxygen? (A) 40 g (B) 55 g (C) 32 g (D) 44 g

Molar mass of O2 = 2 x 16 = 32 g 32 g of O2 = 6.023 x 1023 molecules 40 g of O2 = (6.023 x 1023 x 40)/32 We get, = 7.529 x 1023 molecules... View Article

Brass gets discoloured in air because of the presence of which of the following gases in air? (A) Oxygen (B) Hydrogen Sulphide (C) Carbon dioxide (D) Nitrogen

Hydrogen Sulphide Due to the presence of hydrogen sulphide, brass gets discoloured in air Hence, the correct option is (B)... View Article

A person on tour has rupees 4200 for his expenses. If he extends his tour for 3 days, he has to cut down daily expenses by rupees 70. Find the original duration of the tour.

Given Total money a person has = Rs 4200 Let the duration of tour = x days Expense in a day = 4200/x Duration of extended tour = 3 days... View Article

The edible portion in a fresh onion comprises (a) modified leaves (b) buds and leaf bases (c) swollen stem (d) disc-like stem

The edible portion in a fresh onion comprises modified leaves Hence, the correct option is (a)... View Article

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