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ACCURATE PUBLICATION-BOARD PAPER MARCH - 2019-QUESTIONS
- Give one difference between crystalline and amorphous solids.
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- An element having a density 11.2"g cm"^(-3) forms a fcc lattice with e...
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- Define unit cell and paramagnetic substance.
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- Write the following reaction: Wurtz Fittig Reaction
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- True/False- Stems absorb water and minerals from the soil.
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- True/False- The plant gets nitrogen from air.
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- Why solubility of Haloalkanes in water is very low ?
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- Give one use of freon.
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- Why nitrogen is important for the plants?
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- Give the mechanism of substitution nucleophilic bimolecular, SN^2 reac...
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- Define Optical activity.
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- Why SF6 is known but SH6 is not known ?
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- From HF and Hl which is more acidic and why ?
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- Give preparation of XeF6 and XeOF2.
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- True/False- The ovary is found in the stamen.
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- How many unpaired electrons are present in Fe^+3 and Zn^+2.
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- Why is La(OH)3 more basic than Lu(OH)3 ?
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- Give preparation of Potassium Permanganate (KMnO4).
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- What is Lanthanide contraction ? What is the cause and consequences of...
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- Why transition metals show catalytic properties?
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