What is photo diode? Mention its one use
A photodiode is a PN-junction diode that consumes light energy to produce an electric current. They are also called a... View Article
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What is the hybridisation of carbon atom in carbanion?
The hybridisation of carbon atom in carbon anion is sp3.
Choroid plexus is a network of (a) Nerves (b) Muscle fibres (c) Capillaries (d) Lymph vessels
Capillaries The choroid plexus consists of many capillaries, and separated from the ventricles by choroid epithelial cells. The cerebrospinal fluid... View Article
What is the eccentricity of rectangular hyperbola? (a) √2 (b) √3 (c) √5 (d) √6
When a transverse axis of a hyperbola is equal to its conjugate axis then the hyperbola is known as a... View Article
Line l is the bisector of an angle A and B is any point on l. BP and BQ are perpendiculars from B to the arms of A . Show that: (i) ΔAPB ≅ ΔAQB (ii) BP = BQ or B is equidistant from the arms of A
Given Line l is the bisector of angle A and the line segments BP and BQ are perpendiculars drawn from... View Article
Enzymes are basically made of (a) Nucleic acids (b) Proteins (c) Fats (d) Vitamins
Enzymes are basically made of Proteins Majority of enzymes are proteins with catalytic capabilities crucial to perform different processes. Metabolic... View Article
How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, radish, gram, and turnip have stamens with different lengths in their flowers?(a) Three(b) Five(c) Four(d) Six
Answer: Four The family having different length stamens in their flower are Brassicaceae and Lamiaceae. Families of the given plants... View Article
What is the voltage of the electricity that is generally supplied to a house?
The voltage of the electricity that is generally supplied to a house is 220 volt.
Geometrical isomers are differ in (a) Position of functional group (b) Position of atoms (c) Spatial arrangement of atoms (d) Length of carbon chain
Geometrical isomers differs in spatial arrangement of atoms Geometrical isomers have the same formula but differ in the arrangement of... View Article
A thin rod of length L and mass M is bent at the middle point O at an angle of 60 degree. The moment of inertia of the rod about an axis passing through O and perpendicular to the plane of the rod will be: (a) ML^2/6 (b) ML^2/12 (c) ML^2/24 (d) ML^2/3
The rod is bent at the middle, so each part of it will have same length (L/2) and mass (M/2)... View Article
An ore of potassium is: (a) bauxite (b) dolomite (c) carnallite (d) cryolite
The ore of potassium is carnallite. The structural formula is KCl.MgCl2.6H2O Hence, the correct option is (c)
The process by which water enters the root hair cell is __________
The process by which water enters the root hair cell is known as osmosis. Water enters into root hair through... View Article
Which of the following is not a pollutant? (a) SO2 (b) CO2 (c) CO (d) NO2
CO2 Carbon dioxide is naturally produced by animals and humans as a byproduct of metabolic activities. It is responsible for... View Article
Who am I? I am ATP producing factory
Mitochondria – Mitochondria are membrane-bound organelles present in the cytoplasm of all eukaryotic cells, that produces adenosine triphosphate (ATP), the... View Article
Water flows through a cylindrical pipe whose inner radius is 1 cm, at the rate of 80 cm/s in an empty cylindrical tank, the radius of whose base is 40 cm. What is the rise of water level in tank in half an hour?
Given radius of tank, r1 = 40 cm The height of water level in tank in half an hour be... View Article
Avogadro’s number is the number of molecules present in (a) 1 g of molecule (b) 1 atom of molecule (c) 1 mole (d) 1 litre of molecule
1 mole The number of particles present in one mole of any substance is a fixed value of 6.022 x... View Article
Pneumatophores are (a) Negatively geotropic (b) Positively geotropic (c) Negatively phototropic (d) Thigmotropic
Negatively geotropic Pneumatophores are also known as breathing roots. These roots are available in mangrove trees. These are the changes... View Article
Kinetic energy depends on (a) Position (b) Velocity (c) Shape (d) Colour
Velocity Kinetic energy of an object is the measure of the work an object can do by the virtue of... View Article
Backing storage is so named because it (a) is always kept at the back of the CPU (b) is slow and backward (c) backs up the computer (d) lags behind the main memory (e) None of the above
Backs up the computer In information technology, backing up is a process which refers to the copying into an archive... View Article
Which is valid extension that user creates on operating system? (A) Com (B) Sys (C) Bat (D) Exe
Bat Therefore, the correct option is (C)
