List of top Questions asked in CBSE Class X

"Aluminium oxide is an amphoteric oxide." Justify this statement giving chemical equation for the reactions involved.
What is asexual reproduction? Explain the process of budding in Hydra.
“The consequences of environmental degradation do not respect national and state boundaries.” Examine the statement in context of sustainability of development.
The point \((3, -5)\) lies on the line \(mx - y = 11\). The value of \(m\) is
If the sum of first n terms of an A.P. is given by \( S_n = \frac{n}{2}(3n+1) \), then the first term of the A.P. is
State two limitations of electrical impulses in multicellular organisms. Why is chemical communication better than electrical impulses as a means of communication between cells in multicellular organisms?
Why do we balance a chemical equation? Name and state the law that suggests the balancing of a chemical equation. Balance the following chemical equation: \[ {Zn} + {H}_3 {PO}_4 \rightarrow {Zn}_3 {(PO}_4{)}_2 + {H}_2 \]

काशी में कलाधर-हनुमान हैं और नृत्य-विश्वनाथ हैं ।
(सरल वाक्य में बदलिए)

"It would be beneficial to develop sustainable ways to meet the growing energy demand in India." Support the statement.

"जितेंद्र नार्गे जैसे गाइड के साथ किसी भी पर्यटन स्थल का भ्रमण अधिक आनंददायक और यादगार हो सकता है।" इस कथन के समर्थन में 'साना साना हाथ जोड़ि .......' पाठ के आधार पर तर्कसंगत उत्तर दीजिए।

The line \(2x - 3y = 6\) intersects x-axis at
"Power sharing increases trust between different groups." Support the statement.
How did the Civil Disobedience Movement become a mass movement? Explain with examples.
You have three aqueous solutions A, B and C as given below:
A - Potassium nitrate
B - Ammonium chloride
C - Sodium carbonate
The ascending order of the pH of these solutions is:
Report the dialogue between the residents and the city planner by completing the sentence:
City planner: “The new park is a result of several months of research and planning.”
Residents: “We don’t know who is more excited – we or our children!”
The city planner said that the new park __ of several months of research and planning. The residents expressed their excitement, stating that they were unsure who was more excited – they or their children.
Examine the importance of public facilities for the development.

कंप्यूटर युग 
संकेत बिंदु – कंप्यूटर का बढ़ता उपयोग • कंप्यूटर के विविध क्षेत्र • कंप्यूटर क्रांति 
 

The system of equations $2x + 1 = 0$ and $3y - 5 = 0$ has
‘Dust of Snow’, by Robert Frost is a poem about nature and simplicity. Elaborate.
In the given graph, the polynomial \(p(x)\) is shown. Number of zeroes of \(p(x)\) is
polynomial p(x)
Explain the features of manuscript found in India before the advent of printing culture.
What is a rainbow? 'We see a rainbow in the sky only after the rainfall.' Why?

सड़क सुरक्षा के प्रति जागरूकता हेतु ट्रैफिक पुलिस की ओर से जनहित में जारी एक आकर्षक विज्ञापन लगभग 100 शब्दों में तैयार कीजिए।

Explain the mechanism of inheritance used by sexually reproducing organisms to ensure the stability of DNA of the species.
Name the type of lenses required by the persons for the correction of their defect of vision called presbyopia. Write the structure of the lenses commonly used for the correction of this defect giving reason for such designs.