Doubtly
@Doubtly · Joined Feb 2021
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- tan-1\(\sqrt{3}\) – cot-1(-\(\sqrt{3}\)) is equal to (A) π (B) \(\frac { π }{ 2 }\) (C) 0 (D) 2\(\sqrt{3}\) (B) π / 2 tan⁻¹ √(3) = tan⁻¹(tan π / 3 ) = π / 3 and cot⁻¹ √(3) = cot⁻¹(-cot π / 6 ) = cot⁻¹cot ( π – π / 6 ) = cot⁻¹cot 5π / 6 = 5π / 6 . s... 1
- What is PEAR in PHP? PEAR is a framework and repository for reusable PHP components. PEAR stands for PHP Extension and Application Repository. It contains all ty... 1
- Describe three daily life instances where viscosity plays an important role. Lubricating oils are viscous liquids. Gradation of lubricating oils is done on the basis of viscosity. A good quality lubricating oil does n... 1
- A balloon containing 0.6 mol of helium gas has a volume of 1.5 L. i. The volume of the balloon increases. ii. The volume of the balloon decreases. 2
- In an experiment conducted to study the diffusion of gases using same experimental conditions, following data i. Volume of gas A diffused = 50 cm³ Time required for diffusion = 7 minutes = 7 × 60 seconds Rate\ of\ diffusion\ of\ a\ gas =Volume\ of \... 1
- What makes the oil rise through the wick in an oil lamp? In an oil lamp, oil rises through the wick due to the capillary action. Such a capillary rise of oil is due to surface tension of oil. The w... 1
- Where is Dalton’s law applicable? Air is gaseous mixture of different gases. Dalton’s law is useful for the study of various phenomena in air, for example, air pollution. 1
- Do all pure gases and mixtures of gases obey the gas laws? Yes, the gas laws are also applicable to the mixtures of gases. The measurable properties of mixture of the gases such as pressure, temperat... 1
- Ask or Discuss any type of Question here related to 8-12th students
- What can you tell us about the CSS frameworks? A CSS framework is basically a library that is made up of several CSS style sheets that can be used by web developers and web designers. It... 1
- How can you integrate CSS on a web page? You can integrate CSS on a webpage in three different ways. You can use Inline to add CSS rules to an HTML element. You can use Embedded for... 1
- Explain the CSS Box Model. The CSS Box Model is useful for creating the design and layout of web documents. It is basically a box that is made up of different properti... 1
- What are Grouping and Nesting in CSS? Grouping is used for giving the same properties to different selectors without repeating them. It is useful for reducing code by grouping se... 1
- What are the differences between HTML and CSS? HTML is also known as HyperText Markup Language. It is basically a markup language that can be used for developing web documents, websites,... 1
- What is the main difference between CSS and CSS3? CSS allows developers to give styling to web pages. You can select color, layout, fonts, and backgrounds. CSS3 stands for Cascading Style Sh... 1
- What are some of the disadvantages of CSS? One of the main disadvantages that developers face when using CSS is that it is available at different levels. This causes confusion, especi... 1
- What are some of the advantages of using CSS? CSS plays a critical role in the overall presentation of a website. It is easier to maintain and provides faster page speed. It is compatibl... 1
- What exactly is CSS? CSS is also known as Cascading Style Sheets. It is a styling language that is used along with HTML to make web pages more interesting and pr... 1