Class 7 Maths - Ratio and Proportion (Worksheet - Solved)
Worksheet
Q1: In ratio a : b, a is called as _______ or ________.
Q2: In ratio a : b, b is called as _______ or ________.
Q3: Express 75 : 125 in its simplest term.
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Worksheet
Q1: In ratio a : b, a is called as _______ or ________.
Q2: In ratio a : b, b is called as _______ or ________.
Q3: Express 75 : 125 in its simplest term.
1. Elasticity:
It is the property of a material by which it tries to regain its original configuration after the removal of the deforming force applied to it. Example of perfectly elastic solid, quartz, phosphor, bronze.
2. Plasticity:
It is the property of a body by virtue of which it does not regain its original shape and size even after the removal deforming force, is called plasticity.
Q1. What are Transgenic crops?
Answer: Genetically modified crops that contain or express one or more useful foreign genes are called transgenic crops.
Q2. What are transgenic animals? Give an example.
Answer: Animals manipulated with the foreign gene and have the ability to express it are transgenic animals. e.g. Rosie, a transgenic cow produced milk containing human alpha-lactalbumin.
Q3. What is BT toxin?
Answer: Bt toxin is an intracellular crystalline protein. It exists as an inactive protoxin that once ingested by an insect, gets activated, binds to the surface of midgut epithelial cells. This causes cell swelling and lysis, leading to the death of an insect.
Class 10 Hindi B - Sapnon Ke Se Din - Questions and Answers
लेखक : गुरदयाल सिंह
प्रश्न १ : कोई भी भाषा आपसी व्यवहार में बाधा नहीं बनती-पाठ के किस अंश से यह सिद्ध होता है ?
उत्तर: लेखक अपने बचपन की घटना बताता है कि उसकी खेलने वाली मंडली में कुछ बच्चे हरियाणा के तथा कुछ राजस्थान के थे। उनकी भाषा सुनने में प्रारंभ में कुछ अटपटी लगी परंतु खेलते समय भाषा पूरी तरह समझ आ जाती थी।
Chapter: Hydrocarbons
Very Short Answer Based Questions (VSQA)
Q1: What are hydrocarbons?
Answer: Hydrocarbons are the compounds of carbon and hydrogen are obtained from coal and petroleum.
Q2: What are alkanes?
Answer: Alkanes are saturated open-chain hydrocarbons containing C—C single bonds.
Q3: How C-C atoms are joined in alkanes? What are the lengths of C-C and C-H bonds?
Answer: In alkanes, C-atoms are tetrahedrally joined together in which C—C and C—H bond lengths are 154 pm and 112 pm respectively.
Choose the correct option from the given choices in each question.
Q1. The quadratic equation ax2 + bx + c = 0 will have zero number of real zeroes if-
CBSE Class 11 - Mathematics - Limits and Derivatives Part-10
You have learnt theorems of differentiation part-9. Let us proceed further. Here is a list of differentiation of some standard functions:
Q1: What is a chemical formula?
Answer: The chemical formula of a compound is a symbolic representation of its composition.
Q2: Write the chemical formula for the following compounds. Also identify the ions formed.
➀ Hydrogen Chloride
➁ Hydrogen Sulphide
➂ Carbon Tetrachloride
➃ Magnesium Bromide
Invitations form an important part of social dealings. An invitation is a request to an individual or group of persons to come or go somewhere, or to do something. We need invitations for many social occasions such as celebrations of birthday, engagement, wedding, marriage anniversary, appointment, promotion etc.
Invitations can be both formal as well as informal.
CBSE Class 10 - Harihar Kaka - Hindi B - Words and Meanings
शब्दार्थ
यंत्रणाओं - यातनाओं / क्लेशों /कष्टों।
आसक्ति - लगाव।
मन:स्थिति- मन की स्थिति ।
सयाना - बड़ा होना।
मझधार (मँझधार) - बीच में ( जल प्रवाह या भवसागर के मध्य में )।
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