List all factors of 378 Factors of 378 are 1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126,189 The prime factorisation of 378 is 2 × 33× 7 Prime factors... View Article
Round off 2.999824 up to three decimal places To round off 2.999824 up to three decimal places we look at the ten-thousandth place since it is greater than 5 we shall increase the thousandth... View Article
If x+y= 3 – cos4theta and x-y= 4sin2theta then prove that x^2 + y^2 – 8x – 8y – 2xy + 16 = 0 x + y = 3 - (1 - 2sin22 ) = 2 + 2sin22 x - y = 4sin2 ⇒ sin2 = (x - y)/4 ∴ x + y = 2 + 2[(x - y)/4]2= 2 + [x2 - 2xy + y2]/4... View Article
The arithmetic mean of the roots of the equation 4cos^3 x – 4cos^2 x – cos(315 + x) = 1 in the interaval (0, 315) is equal to: We know that cos[(2n+1) + x] = - cos x Therefore, the given equation becomes 4cos3x - 4cos2x + cos x = 1 {since, cos 315 =... View Article
As the result of a wind blowing normal to the plane of the rectangular sign, a uniform pressure of 175 N/m^² is exerted in the direction shown in the figure. Determine the moment of the resulting force about point 0. Express your result as a vector using the coordinates shown. Solution: As the net force acts on the center of the body. Force is given by the formula F=pa =175*(600*750)*10^{-6} =78.75 N From the... View Article
Which of the following characteristics is responsible for resistance to jassids a) Morphological characteristics b) Biochemical characteristics c) Physiological characteristics d) None of the above Answer: a)... View Article
The inner lining of blood vessels is made of this tissue a) Connective Tissue b) Muscular Tissue c) Nervous Tissue d) Epithelial Tissue Answer: d) Epithelial Tissue Explanation: The... View Article
The age structure of a population influences population growth because a) Different age groups have different reproductive capabilities b) Younger females have more offspring than older ones c) Shorter... View Article
Largest heart is found in a) Elephant b) Giraffe c) Crocodile d) Lion Answer: b) Giraffe Explanation: A Giraffe’s heart is 2 feet long and 11 kgs in... View Article
Ecosystem may be defined as a) Group of Plants b) Group of Plants and Animals c) Group of Plants and Animals along with their environment d) Group of Water Plants... View Article
The first stage of the s-shaped growth curve of the population is a) Log phase b) Lag phase c) Phase of acceleration d) Phase of deceleration Answer: b) Lag phase Explanation: The organisms that... View Article
The oesophagus that opens into the stomach is called a) Glottis b) Gulltet c) Pharynx d) Larynx Answer: b) Gullet Explanation: Oesophagus is the passage by which the food passes from... View Article
The Respiratory quotient of protein, carbohydrate, and fat substrates are in the order a) 0.7, 1, -1 b) 0.9, 1, less than 1 c) 0, -1, 1 d) 1, 0.9, less than 1 Answer: b) 0.9, 1, less than 1 Explanation: Respiratory... View Article
The pitch of the double-stranded B-DNA helix is a) 34 A b) 3.4 A c) 3.4 nm d) Both A and C Answer: d) Both A and C Explanation: The B-DNA is the most common conformation of DNA.... View Article
The cartwheel structure is shown by the a) Cilia b) Flagella c) Centriole d) All the above Answer: d) All the above Explanation: Centrosome is an organelle containing... View Article
The mature gametophyte of Funaria has the following a) Rhizoids b) Leaves c) Stem or Main axis d) All the above Answer: d) All the above Explanation: Funaria is a bryophyte. The... View Article
Even in the absence of pollinating agents, the seed setting is assured in a) Zostera b) Commelina c) Salvia d) Ficus Answer: b) Commelina Explanation: Commelina is a type of flower that never opens. The... View Article
Which of the following is common in both prokaryotes and eukaryotes a) Ribosomes b) Endoplasmic Reticulum c) Mitochondria d) None of the above Answer: a) Ribosomes Explanation: The eukaryotes have... View Article
The number of wrist bones is a) Seven b) Six c) Eight d) Nine Answer: c) Eight Explanation: There are eight small bones called carpal bones in the wrist. They... View Article
Oxygen Toxicity is associated with which of the following a) Failure of ventilation of Lungs b) Blood Poisoning c) The collapse of the alveolar wall d) Both B and C Answer: a) Failure of... View Article
