The value of universal gas constant R depends on________
Answer: The value of the universal gas constant R depends on unit measurement. Gas constant (R) In physics, the gas... View Article
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What controls the opening and closing of stomata?
Answer: Stomata are the specialized pores or openings present in the epidermis of plant cells, which play a crucial role in gaseous... View Article
Which latitude runs almost halfway through India?
Answer: Tropic of Cancer runs almost halfway through India. Tropic of Cancer Tropic of Cancer is an imaginary line which... View Article
What differs in the atomic structure of isotopes?
Answer: Isotopes are the atoms in which the number of neutrons differs and the number of protons is the same.... View Article
In which type of joint is synovial fluid present?
Answer: In the cavities of synovial joints synovial fluid is present. Synovial Joints The most common type of joint is the... View Article
Acceleration is defined as the rate of change of________
Answer: Acceleration is defined as the rate of change of velocity with respect to time. Acceleration The rate of change... View Article
How can zinc oxide be reduced to a metallic zinc?
Answer: When zinc oxide is heated with Carbon, it is reduced to metallic zinc. ZnO + C → Zn +... View Article
Which part of an electrical appliance is earthed?
Answer: The outer metallic case of the appliance is earthed as it is used to prevent electrocution of people handling... View Article
Which of the following xylem element stores food in the form of starch or fats and other substances like tannin?
Xylem parenchyma is associated with storage of food in xylem tissue. The role of xylem parenchyma in storage is often highlighted,... View Article
Name the metal which is kept in kerosene and why?
Answer: Sodium is stored in kerosene as it is a highly reactive metal. If it is kept in the open... View Article
Give the chemical reaction between tin and water.
Answer: Tin is stable to water at ambient temperature, but it reacts with water to form tin dioxide (SnO2) and hydrogen... View Article
Give an example of a non-biodegradable substance.
Answer: A Non-Biodegradable substance can be defined as a kind of substance which cannot be broken down by natural organisms... View Article
Name the organ which connects placenta to embryo.
Answer: The umbilical cord connects the embryo with the placenta. Placenta Placenta refers to the temporary vascular organ found in... View Article
What is the molecular formula of Aluminium oxide?
Answer: Formula of Aluminium oxide is Al2O3. Formula Al2O3 Molar Mass 101.960 g·mol−1 Density 3.987g/cm3 Melting Point 2,072 °C Boiling Point... View Article
What is the image formed by the lens of a camera?
Answer: An inverted and diminished image is formed by the lens of the camera. A camera lens is an optical... View Article
The ground state electron configuration of Fe is_______
Answer: The electronic configuration of iron is Fe(Z=26) = 1s22s22p63s23p64s23d6 Iron (Fe) is a transition metal that fills atomic orbitals according... View Article
What is the chemical formula of Chile salt petre?
Answer: NaNO3 Chile salt petre In the earth crust, nitrogen occurs as sodium nitrate (NaNO3) called Chile salt petre, a deliquescent... View Article
What happens in convection mode of heat transfer?
Answer: The process of heat transfer through movement of particles of medium from one place to another is convection. Convection... View Article
Benzonitrile is the IUPAC name of which compound?
Answer: According to IUPAC nomenclature, alkyl cyanides are called alkane-nitriles and phenyl cyanides are called benzonitrile. Benzonitrile The chemical compound... View Article
Which halogen shows an oxidation state of -1 only?
Answer: Fluorine Fluorine is the most electronegative element, and it shows does not show a variable oxidation state. Fluorine has no... View Article
