Detect the differences in the following statements contained in a firm’s plan.
1. We sell goods only on Cash basis
2. Smoking is prohibited in the factory Premises.
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To detect the leakage of gas from the cylinder the substance added to the gas is……..
Correct option is A) C2H5SH
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i. λ1 are used by a FM radio station for broad casting. ii. λ2 are used to detect bone fracture. iii. λ3 are absorbed by the ozone
i. λ1 belongs to radiowaves. ii. λ2 belongs to X-rays. iii. λ3 belongs to ultraviolet rays. iv. λ4 belongs to infrared radiations. Ascending order of magnitude of wavelengths: λ3 < λ3 < λ4 < λ1
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How many moles are contained in 180 grams of water ? A) 100 B) 10 C) 180 D) 18
Correct option is B) 10
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α-particles scattering experiment helped to detect the existence of the nucleus. The main observation of this experiment is
B) Few no. of alpha particles got deflected.
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A paper is folded several times. When it was opened it was observed that it contained 22 triangles and 22 quadrilaterals
Correct option is (A) Both triangles and quadrilaterals \(\because\) 22 is greater than 12. \(\therefore\) Triangles and quadrilaterals both occur most frequently. \(\therefore\) Both triangles and quadrilaterals are mode.
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A paper is folded several times. When it was opened it was observed that it contained 22 triangles and 22 quadrilaterals
2 Answers
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These can detect ripples produced in water by insects.
The correct answer is C) Pond skaters
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Beryllium shows many differences with other alkaline earth metals. Discuss these differences with respect to chlorides and oxides.
1. Properties of chlorides: Beryllium chloride is covalent whereas chlorides formed by other alkaline earth metals are ionic in nature. Beryllium chloride is a strong Lewis acid whereas chlorides formed...
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State true or false statements. Corret each false statements to make it true. (i) Within a species, genetic diversity occurs in the differences of all
Correct Answer - (i) TRUE (ii) Flase , more than 50,000 (iii) Flase, Ecomsystem diversity is low in Norway because of the ocurrence of a small number of ecosystems.
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The number of atoms or molecules contained in one face centered cubic unit cell of a monoatomic substance is.........
Correct answer is: (C) 4
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