Give two example in each case : a) Liquid non polar compounds b) coordinate bond compounds
Examples are: a) Toluene and Gasoline b) H3O+ and NH+4
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An example of viviparous fish is a) Labeo b) Hippocampus c) Exocoetus d) Scoliodon
Option d) Scoliodon. Viviparous fish give birth after the eggs develop inside the body, whilst receiving nutrition from the parent.
The lower surface of a cube is fixed. On its upper surface, force is applied at an angle of 30∘ from the surface. The change will be in its: a) size b) volume c) shape d) both shape and size
Option d) both shape and size. When the force is applied, the cube is compressed as shear stress and normal... View Article
Mention any one positive aspect of television
Positive aspect of television are: Television gives exposure to the happenings around the world. It provides entertainment when required.
Calculate the area of a quadrilateral ABCD when the length of the diagonal AC=10cm and the lengths of perpendiculars from B and D on AC be 5cm and 6cm respectively.
Length of the diagonal (AC)=10 cm Area of quadrilateral ABCD=ar(△ABC)+ar(△ACD) =(1/2×AC×BM)+(1/2×AC×DL) =1/2×AC(BM+DL) =1/2×10(5+6) =5×11cm2 =55cm2
Suggest the most important type of intermolecular attractive interaction in the following pairs: (i) n-hexane and n-octane (ii) I2 and CCl4 (iii) NaClO4 and water (iv) methanol and acetone (v) acetonitrile (CH3CN) and acetone (C3H6O)
Inter-molecular attractive interaction in the following pairs are: (i) Van der waals interactions (ii) Van der waals interactions (iii) Ion... View Article
The energy absorbed by each molecule (A2 of a substance is 4.4×10−19 J) and bond energy per molecule is 4×10−19 J. The kinetic energy of the molecule per atom will be:
Kinetic Energy per atom = energy absorbed−bond energy / number of atoms in the moleculesGiven: Molecule is A2 (diatomic)Energy absorbed... View Article
Which of the following is an amino acid derived hormone a) Epinephrine b) Estriol c) Estradiol d) Ecdysone
Option a) Epinephrine. Epinephrine is secreted by the adrenal gland.
The main memory of a computer can also be called
The main memory of a computer can also be called as primary memory. It is also known as Random Access... View Article
What type of magnetic material is used in making electromagnets a) Paramagnetic b) Ferromagnetic c) option 1 and 2 d) None of the option
Option b) Ferromagnetic. These materials have low retentivity and high permeability.
Name the simplest hydrocarbon
Methane (CH4) is the simplest hydrocarbon and is the first member of the alkane family.
Aluminium is used in thermite welding because a) It is a strong oxidizing agent b) It is a reactive metal c) It is a light metal d) It has more affinity for oxygen
Option d) It has more affinity for oxygen. Aluminium is a strong reducing agent.
Write a full form of RFLP
Full form of RFLP is Restriction Fragment Length Polymorphism.
————- energy is the main driving force of the ecological system a) Solar b) Mechanical c) Hydro d) Electric
Option a) Solar. Main driving force of the ecological system is the solar energy.
Give one example of the community owned resources
Grazing ground, public parks, playgrounds, Village ponds are some examples of community-owned resources.
What are convex polyhedrons
A convex polyhedron can be defined as a polyhedron for which a line connecting any two non-coplanar points on the... View Article
Explain why an electromagnet is called a temporary magnet
An electromagnet is called a temporary magnet because it produces a magnetic field only when the current flows in its... View Article
The battle of wandiwash was fought between the a) English and French b) Hydrogen bonds c) Nizam of Hydrabad and the French d) Nawab of Carnatic and the English
Option a) English and French. Battle of wandiwash was fought in the year 1760.
The primary structure of a protein is due to a) −S−S− linkages b) Hydrogen bonds c) Ionic bonds d) Peptide bonds
Option d) Peptide bonds. The proteins are composed of amino acids and these amino acids are connected by peptide bonds... View Article
What is the function of scrotum
Functions of the scrotum are: It holds the testicles (also called testes), as well as many nerves and blood vessels.... View Article
