Question

C.
PAPER-1
Q1. Fill in the blanks:
a. A substance that brings reduction is called as
b. Pure hydrogen burns quietly in air with flame.
is the purest form of amorphous carbon.
d. Our stomach produces acid.
c. An acid turns blue litmus paper
f. Salts are compounds formed by combination of and a base
is neither created nor destroyed during a chemical reaction.
h. An atom is electrically
Q2. Name the following:
a. The energy possessed by molecules in motion
b. The bond between carbon atoms in graphite.
c. Converting liquid vegetable oils into solid ghee.
d. The gas having density 0.09 g/cm'.
e. The allotrope of carbon that is a good conductor of electricity.
f. A reaction in which a substance breaks up into two or more simpſer substances,
g. A reaction that can proceed in cither direction.
h. A subatomic particle that carries a negative charge.
Q3. Write true or false. Rewrite correct statement:
a. In solids, molecules move randomly.
b. Valence shell is the outermost shell of an atom.
c. Carbon monoxide is ahighly oxidising agent.
d. A hydroxide ion is a polyatomic ion.
e. Chlorine has variable valency.
f. When two atom share electrons, they form covalent bond.
g. An alkali is a base that is soluble in water.
h. Potassium hydroxide is commonly called as caustic potash.
Q4. Give two examples of each:
a. Neutral oxide.
b. Chemical used in photography,
c. Metallic carbonate.
d. Uses of graphite
e. Crystalline form of carbon
Q5. Write the chemical name of the compounds:
a. ZnCl2 d. Cu(NO3)2
b. KCIO;
e. FeSO4
C. NaOH.
+
Q6. Balance and complete the equation:
heat
a. NHCT
cool
b. Cl2 + KBr →
C, K + H2O →
d. CuO + H2SO4 →
e. Pb;04 →
f. Na2O + H2O →
+​

Answer 1

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