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Widal test is done to confirm (A) Malaria (B) Typhoid (C) Pneumonia (D) Jaundice

Typhoid The Widal test is a serological test that is performed for typhoid fever diagnosis. In this test bacteria causing... View Article

The meniscus of mercury in the capillary tube is (A) Convex (B) Concave (C) Plane (D) Uncertain

The meniscus of mercury in the capillary tube is convex. Hence, the correct option is (A)

Thermoregulatory centre of the human body is (A) Pituitary (B) Skin (C) Hypothalamus (D) Thyroid

Hypothalamus Hypothalamus maintains the constant body temperature by regulation of the diameter of blood vessels, and sweating mechanisms. Therefore, the... View Article

Which of the following is a basic amino acid? (A) Lysine (B) Proline (C) Alanine (D) Aspartic acid

Lysine There are two functional groups present in all amino acids. One is carboxylic and the second is an amine... View Article

Underline the subject in the following sentence: Ninety five percent of an individual’s life is determined by his birth and death (A) Ninety-five percent (B) Ninety-five percent of an individual’s life (C) his birth and death (D) is determined by his birth and death

Ninety-five percent of an individual’s life In the given sentence option (B) is the subject of the sentence. Option (A)... View Article

There is 60% increase in an amount in 6 years at simple interest. What will be the compound interest of Rs 12000 after 3 years at the same rate?

Given 60% increase in amount in 6 years at Simple Interest We need to find CI of Rs 12000 after... View Article

Maximum solar energy is trapped by (A) planting trees (B) cultivating crops (C) growing algae in tanks (D) growing grasses

Maximum solar energy is trapped by growing algae in tanks. Hence, the correct option is (C)

The ratio of active masses of 22g of CO2, 3g of H2 and 7g of N2 in a gaseous mixture: (A) 22:3:7 (B) 0.5: 3: 7 (C) 1:3:1 (D) 1:3: 0.5

Let V be the volume of gaseous mixture CO2 = 22/44 = 0.5 moles H2 = 3/2 = 1.5 moles... View Article

Three moles of an ideal gas kept at a constant temperature at 300 k are compressed from a volume of 4L to 1L. The work done in the process is (A) – 10368J (B) -110368J (C) 12000J (D) 120368J

Here n = 3 T = 300K V1 = 4 litre V2 = 1 litre W = ? In an... View Article

Give reason: Histones are positively charged

Histones contain high amount of amino acids such as lysines and arginines. Both the basic amino acids carry positive charge... View Article

How many valence electrons does al have?

In the third row of the periodic table, the third element is aluminium. The outermost orbitals to be filled are... View Article

Choose the best alternative as the answer Danger always involves (A) Enemy (B) Attack (C) Fear (D) Help

Fear Danger is only felt when there is any fear. Hence, danger always involves fear Therefore, the correct option is... View Article

Fill in the blank with a suitable option: He said, ‘It may rain later in the day’. He said that it _________ rain later in the day (A) Would (B) May (C) Might (D) Must

Might Might is used to express the future possibility In the given sentence, the speaker is expressing the possibility of... View Article

A wheel has diameter 84 cm. Find how many complete revolutions must it take to cover 792 meters

Let r be the radius of the wheel Given Diameter = 84 cm 2r = 84 r = 84/2 r... View Article

Which one of the following gas is most soluble in water? (A) He (B) H2 (C) NH3 (D) CO2

NH3 Ammonia is a colorless gas with a chemical formula NH3. It is most soluble in water because of hydrogen... View Article

A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27 degree C two successive resonances are produced at 20 cm and 73 cm column length. If the frequency of the tuning fork is 320 Hz, the velocity of sound in air at 27 degree C is: (A) 330 m/s (B) 339 m/s (C) 350 m/s (D) 300 m/s

Given two successive resonance is produced, Hence, using the formula, Formula of resonance V = 2f(l2 – l1) On substituting,... View Article

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