List of top Questions asked in UP Board XII

Mention the main features of Plantation Agriculture.
Differentiate between Dry land farming and Wet land farming.
How would you define Human Settlement?
How does human life is influenced by the natural environment? Explain.
Discuss the major trends of modern industrial activities especially in the developed countries of the world.
Which of the following is the cause of Acid rain?
What is Truck Farming?
Define Migration.
Which one of the following is a land-locked harbour?
I.T.D.P. refers to which of the following?
Which of the following is NOT an approach of Human Development?
In which of the following states are the major oil fields located?
In which of the following environments, one does not expect the presence of dispersed rural settlements?
Which one of the following states has the highest density of population?
Which one of the following is the most densely populated region?
Describe the laboratory method to prepare aniline and write the related chemical equation. Write also the equations of its two chemical properties and uses.
Write short notes on the following:
i) Carbylamine reaction
ii) Hofmann's bromamide reaction
iii) Acetylation
Write the structural formula of benzaldehyde. Write chemical equations of the reactions of benzaldehyde with (i) NH$_2$NH$_2$
(ii) Tollen's reagent
(iii) HNO$_3$ and H$_2$SO$_4$
(iv) NaOH.
Write the IUPAC name of Acetaldehyde. Write its chemical equations with (i) NaHSO$_3$
(ii) NaOH
(iii) NH$_2$OH
(iv) CH$_3$OH in the presence of HCl gas.
What is electrode potential? Give the factors which affect the electrode potential of a metal.
Which elements are called transition elements? Explain: (i) Transition metals generally form coloured compounds, (ii) Transition metals or ions and many of their compounds show paramagnetic behaviour.
Write chemical equations of two methods of preparation of glucose. How will you obtain saccharic acid and gluconic acid from glucose?
Write chemical equation for the formation of chlorobenzene by Sandmeyer reaction. How can the following compounds be obtained from chlorobenzene? Clarify giving chemical equations.
(i) Phenol
(ii) Toluene
(iii) Diphenyl
Prove that the time taken to complete 99.9% reaction is ten times the half-life period $(t_{1/2})$ for a first-order reaction.
Write down the method of preparation of phenol. Write chemical equations of the reaction of phenol with the following: (i) Conc. HNO$_3$ (ii) Bromine water (iii) Zinc