The heater's heating element is made up of an alloy that has very high resistance, so when current flows through the heating element, it becomes... View Article
Zn2+ On adding ammonium hydroxide solution to a solution containing Zn2+ ion a white precipitate is formed. If the addition of ammonium... View Article
Answer: The radius of the curvature of the mirror is defined by the radius of the sphere from which the mirror was cut from. Therefore the... View Article
Apomixis is the development of a seed without fertilization. Apomixis is a type of asexual reproduction which mimics sexual reproduction.... View Article
Answer:Â (c) I (d) A T M O I A H U V W X Y are alphabet that do not undergo lateral reflection. The letter I and A does not show lateral... View Article
Answer: Option (B) HCl The boiling point of covalent compounds(HF, HCl, HBr, HI) increases with an increase in their molecular weight due to... View Article
i)Â Semiconductor The resistance decreases with an increase in temperature. The resistance is directly proportional to the temperature. The... View Article
Nitration of benzene by nitric acid and sulphuric acid is an Electrophilic substitution reaction. Nitration is the class of chemical process that... View Article
Sodium (Na) gains oxygen and gets oxidised to sodium oxide (Na2O). A substance is said to oxidised if it loses its electrons or addition of... View Article
A binary compound of oxygen with another element is called oxide. An oxide is a binary compound of oxygen and another element. Oxygen combines... View Article
The emulsion is the term used for explaining the dispersion of one liquid in another liquid. The emulsion is a type of liquid-liquid colloidal... View Article
The chemical formula of Cryolite is Na3AlF6. Cryolite, also known as sodium hexafluoroaluminate, is a colourless compound forming cube-like... View Article
Fog is not a form of precipitation Precipitation is any form of water particle, whether liquid or solid, that falls from the atmosphere and... View Article
Answer: During riding a bicycle, the muscular energy of the rider is regenerate into heat and mechanical energy. Kinetic energy provides a rate... View Article
Liquids and solids are hard to compress because the magnitude of repulsion rises as the distance separating the molecules decreases. Molecules... View Article
The correct option is i) Potato. Potato is dicotyledonous. All others given are monocotyledonous. Cotyledon refers to the first seed leaf,... View Article
Dihydrogen under certain reaction conditions combines with all elements except noble gases. This is mainly because the atoms of these elements... View Article
(a) Coal is a fossil fuel. Coal is a black hard rock, flammable in nature. It belongs to the category of solid fossil fuels because of their... View Article
Jute is a substitute for Mesta. Mesta is a herbaceous yearly plant. It is an essential commercial crop after Jute. Its foundation lies in... View Article
The concentration of H2SO4 decreases during the working of the lead storage battery. The conversion of electrical energy into chemical energy by... View Article
