Oxygen has an oxidation state of +2 in (A) F2O (B) Cl2O (C) Na2O2 (D) Na2O
F2O Fluorine is the only element more electronegative than oxygen. So, oxygen shows +ve oxidation states only in compounds with... View Article
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Fever in malaria is due to (A) entry of sporozoites into blood capillaries (B) entry of merozoites into liver cells (C) release of merozoites from red blood cells (D) entry of cryptomerozoites into red blood cells
release of merozoites from red blood cells Malaria is not caused by a virus or bacteria. Malaria is caused by... View Article
Why do novels use vernacular language?
A vernacular refers to the language spoken by an inhabiting people of a particular country or region. All novels use... View Article
Why are shockers used in scooters and cars? Explain
Shockers are used in cars, scooters and motorcycles so that the time interval of the jerk increases. Hence, the rate... View Article
A point R with x-coordinate 4 lies on the line segment joining the points P (2, –3, 4) and Q (8, 0, 10). Find the coordinates of the point R.
Given The coordinates of the points P (2, -3, 4) and Q (8, 0, 10). x1 = 2, y1 =... View Article
Mouth parts of housefly is of (A) Sponging type (B) Sucking type (C) Siphoning type (D) Piercing type
Sponging type Mouthparts of housefly is of sponging type and are used for sucking liquid food. It also includes a... View Article
Where is barren island located?
Barren Island is an island located in the Andaman Sea. It is situated about 140 km from Port Blair. Barren... View Article
Current is measured by an instrument called (A) ammeter (B) voltmeter (C) galvanometer (D) wheatstone bridge
Ammeter The instrument used to measure electric current is an ammeter. To measure electric current in a circuit, an ammeter... View Article
Jim corbett national park is situated in which state? (A) Madhya Pradesh (B) Uttarakhand (C) Haryana (D) Gujarat
Uttarakhand India’s first national park, the Jim Corbett National Park was established in Nainital, Uttarakhand. It was renamed as Ramganga... View Article
Compare the primitive subsistence farming and commercial farming
Primitive subsistence farming 1. Primitive subsistence farming is one of the earliest farming techniques to be practised since it makes... View Article
Define genetics
Genetics is defined as the branch of biology that deals with the study of genetic variation genes, and heredity. Gregor... View Article
A triangle cannot have more than ___________ right angle(s). (A) one (B) two (C) three (D) zero
one A triangle cannot have more than one or two 90 degrees or right angles, because by the angle sum... View Article
Largest silk producing state of India is _____________ (A) Karnataka (B) Bihar (C) Bengal (D) Assam
Karnataka After China, India is the second largest producer of silk in the world. Silk is mainly produced in five... View Article
Choose the synonym of the word given below: Swift (A) Move (B) Speedy (C) Leisurely (D) Sluggish
Speedy The meaning of the word swift means something happening quickly, for example, a miraculously swift recovery. From the given... View Article
An agreement in restraint of marriage i.e. which prevents a person from marrying is ___________ (A) void (B) valid (C) voidable (D) contingent
Void Section 26 of the Indian Contract Act of 1872 states that every agreement in restraint of marriage, except those... View Article
The loudness of sound is determined by its _____________ (A) Amplitude (B) Frequency (C) Velocity (D) Source
The loudness of sound is a phenomenon of a sound depending on the amplitude of the sound wave. If the... View Article
The system that contains the maximum number of atoms is: (A) 4.25 g of NH3 (B) 8 g of O2 (C) 2 g of H2 (D) 4 g of He
Number of atoms = (mass/molar mass) x NA x Number of atoms in one mole Hence, Number of atoms in... View Article
A guy walks into a store and steals Rs 100 from the store without the owner’s knowledge. He then buys Rs 60 worth of goods using that Rs 100 and the owner gives Rs 40 in change. How much money did the owner lose?
First loss of the owner = Rs 100 When the thief bought Rs 60 worth of goods using the same... View Article
Gold number is associated with: (A) Electrophoresis (B) Purple of cassius (C) Protective colloid (D) Amount of pure gold
Protective colloids The minimum amount of protective colloid in mg which is just sufficient to prevent the coagulation of 10... View Article
Assertion: The largest cell of the embryo sac is central cell. Reason: It consists of a fused nuclei (A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion (B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion (C) If the assertion is true but the reason is false (D) If both the assertion and reason are false
If both the assertion and reason are true but the reason is not a correct explanation of the assertion The... View Article
