13 May 2020: The Hindu Analysis
UPSC Current Affairs Preparation: The Hindu Analysis Watch expert analysis of ‘The Hindu’ dated 13th May 2020. Important news and... View Article
Latest Posts
Which of the following constitutes a food chain? (1) Grass ,wheat and mango (2) Grass ,Goat and human (3) Goat, cow and elephant (4) Grass , fish and goat
Answer: (2) A food chain is a linear pathway showing the flow of energy. The food chain is a sequence... View Article
When potassium chlorate (KClO3) is heated in the presence of manganese dioxide catalyst, it decomposes to form potassium chloride and oxygen gas. Represent this in the form of a balanced chemical equation.
Answer: In the presence of a manganese dioxide catalyst, when potassium chlorate (KClO3) is heated, it breaks down to form... View Article
Describe with suitable diagram the Deacon process of manufacture of chlorine. Write its reaction with ammonia.
Answer: Deacon’s method The method Cl2 is obtained by oxidizing HCl gas with oxygen in the presence of a catalyst.... View Article
Comma shaped bacteria are (1) Bacilli (2) Spirilla (3) Vibrios (4) Cocci
Answer: (3)Vibrios Explanation Bacteria with a rod-shaped structure are termed as Bacilli. Examples include corynebacterium and Clostridium tetani. Spiral shaped... View Article
What is the function of germ pore? (1) Emergence of radicle (2) Absorption of water for seed germination (3) Initiation of pollen tube (4) Release of male gametes
Answer: (3) A germ pore is a small pore in the fungal pore’s outer wall from which the germ tube... View Article
What are food preservatives? Give example
Answer: The substance which is used for long-term food preservation or long-term storage is called food preservatives. Food preservation Food... View Article
Explain the formation of nitrogen molecule by molecular orbital theory (MOT) .
Answer: The electrons in atomic orbitals are influenced by one nucleus but in the case of molecular orbitals, the electrons are... View Article
Draw a ray diagram of astronomical telescope for distance object in normal adjustment. What is the expression for its magnifying power.
Answer: Ray diagram of an astronomical telescope with a normal adjustment is given below The magnifying power is given by... View Article
The characteristic of anatropous ovule is (1) Occurrence of hilum near the micropyle (2) Presence of raphe (3) Body of the ovule is inverted (3) All the above.
Answer: (4) The most common form of ovules is anatropous ovule, which occurs in more than 80% of angiospermic families.... View Article
Concept of cellular totipotency was established by (1) White (2) Haberlandt (3) Steward (4) Muir
Answer: (2) Cellular totipotency is the potential of a single cell to generate all types of cells and to assemble... View Article
The smallest planet in the solar system is (1) Mars (2) Jupiter (3) Mercury (4) Earth
Answer: (3) Mercury Our solar system contains eight planets. Every planet revolves at different distances around the sun. In our solar... View Article
Define resolving power of microscope. Write its formula. How will it vary, when (a) wavelength of incident light is decreased? (b) aperture of the objective lens is decreased?
Answer: Resolving power is defined as the inverse of the distance or angular separation between two objects which can be... View Article
The ratio of 9:7 is due to (1) Lethal genes (2) Supplementary genes (3) Epistatic genes (4) Complementary genes
Answer: (3) The complimentary gene is an interaction between two dominant non-inter allelic genes in which each gene has its... View Article
The cryoscopic constant value depends upon (1) The molar mass of the solute in the solution (2) The molar mass of the solvent in the solution (3) The enthalpy of vaparization of the solvent (4) The freezing point of the solvent
Answer: (1) The molar mass of the solute in the solution A cryoscopic constant is described as the freezing point... View Article
Hydrostereom or transfusion tissue is found in (1) Gymnosperm roofs (2) Gymnosperm leaves (3) Gymnosperm stems (4) All the above
Answer: (2) Transfusion tissue or Hydrostereom for water and food conduction is found in Pinus and Cycas leaves or leaflets.... View Article
Differentiate between infectious and non-infectious diseases.
Answer: A disease is a condition that deteriorates the normal functioning of the cells, tissues, and organs. The two types... View Article
What is the biggest part of the human brain? What is its function?
Answer: Cerebrum The cerebrum is a part of the forebrain. It consists of the cerebral cortex and other subcortical structures.... View Article
As the rain water is the purest form of water, this can be used in lab due to: (1) Presence of ions (2) Absence of ions (3) Good smell (4) Easy avilability
Answer: (2) The purest source of natural water is Rainwater. The rainwater directly comes from the condensation of water in... View Article
Which one is true fish? (1) Jelly fish (2) Star fish (3) Dog fish (4) Silver fish
Answer: (3) Dogfish is a true fish, amongst Jellyfish, Starfish, Dogfish and Silverfish. Explanation Jellyfish can not be listed as... View Article
