Answer: In a chemical reaction, energy is used for breaking the bonds of the reactants also energy is used in formation of new bonds. So, there... View Article
Answer: The male sex hormone 'testosterone' is secreted by male testicles. In males, testes secrete the sex hormone 'testosterone' which is... View Article
Answer: There are 2 number of unpaired electrons in Ni2+. Electronic configuration of Nickel(Ni) is Ni (Z = 28) =Â 1s22s22p63s23p64s23d8... View Article
Answer: Butanone has a functional group ketonic group (C=O). In ketones, the carbonyl group has 2 hydrocarbon groups attached to it. These can... View Article
Answer: H2O + CuSO4 → CuSO4.5H2O The reaction between H2O and CuSO4 gives CuSO4.5H2O which is blue vitriol. The end product is known as copper... View Article
Answer: Sieve tubes and companion cells are components of Phloem. Phloem is a complex permanent plant tissue. It is made up of sieve tubes,... View Article
Answer: The atomic mass of an element is the mass of one atom of that element. Average atomic mass takes into account the isotopic abundance.... View Article
Answer: Terraced farming is a method of growing crops on sides of hills or mountains by planting on graduated terraces built into the slope.... View Article
Answer: North America is the third-largest continent in the world. Geographically the North American continent has many regions and subregions.... View Article
Oxygen is the most abundant non-metal on the earth. The chemical formula of oxygen (dioxygen) is O2. This formula is given so because oxygen... View Article
Answer: (4)Â Analgin Narcotics are habit-forming or addictive analgesic drugs. Analgin is a non-addictive analgesic. Drugs are chemical... View Article
Answer: The respiration which takes place without oxygen is known as anaerobic respiration. The microorganisms like yeast break down glucose... View Article
Pure diamonds are pure carbon, although most diamonds contain some impurities. The presence of nitrogen causes the diamonds to absorb blue light,... View Article
Answer: Rice Shifting cultivation is also known as Slash-and-burn cultivation. It is a type of farming activity which involves clearing of a... View Article
We need to know the value of zero kelvin on the Celsius scale We know that C = K - 273 Substituting K=0 in the above equation we get, =... View Article
Answer: The most abundant element in the earth’s crust is oxygen (46. 1%). The chemical formula of oxygen (dioxygen) is O2. This formula is... View Article
Answer: Diazonium salts are one of the most versatile combinations of organic and inorganic components. Its general way of representation is... View Article
Answer: Sambhar is a saltwater lake. Sambhar Salt Lake is the biggest inland salt lake in India, and it is located in Jaipur Rajasthan, India.... View Article
Answer: The solar system is very huge and consists of many objects held together by the gravitational force. The sun is the centre and the... View Article
Answer: We can obtain different gases from air by fractional distillation of liquid air. Air is a gaseous mixture that is homogeneous. It is... View Article
