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Khaira disease of rice is caused due to deficiency of(1) Boron deficiency(2) Zinc deficiency(3) Magnesium deficiency(4) All of the above

Answer: (2) The deficiency of zinc in rice causes khaira disease. They existed as smaller patches in the nursery or might be observed in the... View Article

Gather information about (1) Solar light , (2) Solar water heating system and (3) Solar cooker.

Answer: Solar light is a device that functions based on sunlight. Solar light absorbs solar energy during the daytime and converts the... View Article

What is the full form of CNG?

Answer: The full form of CNG is Compressed Natural Gas. CNG is type of natural gas it is stored at high pressure. The application of CNG are... View Article

Turmeric is a natural indicator which turns(1) Yellow in acid and pinkish-red in base(2) Blue in base and red in acid(3) Yellow in base and pinkish-red in acid(4) Bilue in acid and red in base

Answer: (1) Yellow in acid and pinkish-red in base Turmeric compound is a naturally occurring yellow colour compound. It is an acid-base... View Article

Gastric juice contains(1) pepsin, lipase and rennin(2) trypsin lipase and rennin(3) trypsin, pepsin and lipase(4) trypsin, pepsin and renin

Answer: (1)pepsin, lipase and rennin Gastric juice has pepsin, lipase, and rennin in it. Pepsin is secreted as pepsinogen in an inert form... View Article

Name the largest gland in human body. Where is it located?

Answer: The liver is the largest gland in the human body. It is situated on the right side of the abdomen. The liver is split into the left and... View Article

Name the largest cell and smallest cell.

Answer: A cell is described as the smallest, basic unit of life in charge of all the processes of life. The Cerebellum's Granule Cell is the... View Article

Let ABC is a right angled triangle in which AB = 3 cm and BC = 4 cm and ∠ABC=90 o . The three charges +15, +12 and -20 esu are placed on A, B and C respectively. Calculate the force acting on B.

Answer: The net force on B can be calculated as follows FNet = √FA2 + FC2 Now calculate FA and FC FA = (15 Χ 12) / (32) FA = 20 dyen FC =... View Article

In a grazing food chain(1) Primary consumers eat detritus(2) Primary consumers eat photosynthetic organisums(3) Secondary consumers eat detritus(4) Secondary consumers eat photosynthetic organisums

Answer: (2) The grazing food chain (GFC) is the normal food chain in which plants are the producers and the energy flows from the producers to... View Article

What is the common name of the compound CaOCl₂?

Answer: Calcium Hypochlorite is an inorganic chemical compound with chemical formula CaOCl2. They are also called calcium oxychloride and the... View Article

Differentiate between primary, secondary and tertiary alcohol By Victor Meyer method.

Answer: The Victor Meyer test is used to differentiate between primary, secondary and tertiary alcohol by the colour they obtain when they... View Article

The colour of chlorine gas is(1) Red(2) Yellow(3) Purple(4) Orange

Answer: (2) The chlorine is a yellow gas. As we go below in the group, the halogen will have a dark colour. So the colour of fluorine gas is pale... View Article

The sex determination symbol is XXY in the human beings with syndrome known as(1) Turner’s (2) Male Klinefelter(3) Female Klinefelter(4) Down’s

Answer: (2) Klinefelter syndrome is a disorder associated with chromosomes X and Y which are called sex chromosomes. Every cell in the human body... View Article

Who is known as the father of botany(1) Aristotle(2) Linnaeus(3) Theophrastus(4) Darwin

Answer: (3) Theophrastus Theophrastus is known as the father of Botany. Aristotle is known as the father of biology and zoology. The father of... View Article

The sum S of first n natural numbers is given by the formula S= 2n(n+1) .If S=231, find n

Answer: Given S = n(n+1)/2 Where n= 231 231 = n(n+1)/2 231 ✕ 2 = n2 + n 462 = n2 + n Now n can be written as 22n - 21n ∴ n2 + 22n - 21n... View Article

What is the full form of IUCN?

Answer: The official full form of IUCN is the International Union for Conservation of Nature and Natural Resources.The International Union for... View Article

A rocket works on the principle of : (1) Mass (2) Energy (3) Momentum (4) Velocity

Answer: (3) Momentum The rocket operates on the principle of conservation of momentum. The rockets gain momentum equal to the momentum of the... View Article

Power alcohol is a mixture of (1) 80% petrol + 20% benzene + small quantity of ethanol(2) 80% petrol + 20% ethanol + small quantity of benzene(3) 80% ethanol + 20% benzene + small quantity of petrol(4) 50% petrol + 50% ethanol + small quantity of benzene

Answer: (2) Power alcohol is a liquid mixture containing 80% petrol, 20% ethanol and a small amount of benzene. It is useful in the field of... View Article

Who coined the term genetics?

Answer: The genetic term was coined in 1905 by the English biologist William Bateson. He also described the study of heredity.... View Article

The device used for producing electric current is called (1) Ammeter(2) Generator(3) Galvanometer(4) Motor

Answer: (2) Generator The system used to generate electrical current is called a Generator. The generator converts electrical energy into... View Article

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