Question

4) The selling price of house for smt. Sunita is Rs.
Subject: General Science
Q.1. A) Find the add term out
1. Malaria, hepatitis, elephantiasis, dengue.
3. Milk, Lemon juice, carbon, steel
2. Electric bulb, Electric heater, Electric bell, Electric iron
4. Gold, silver, Iron, Diamand
5. Volcanic eruption, Earthquake, Atomic explosion, Forest fire,
6. Ductility, Brittleness, sonority, Malleabillity.
B) Write whether the following statements are True or False.
1. Lactobacilli are harmful bacteria. False 2. Force and Weight have same units.
3. The SI unit of electric potential is the ampere.
4. An Atom as a whole is electrically neutral.
Q.2.A) Fill in the blanks.
False
1. In fungi cellwall is made up of tough and complex sugar called Chitin
2.ELISA - test is performed on blood to diagnose AIDS.
3. The tendency of an object to remain in its existing state is called Inertia.
4. An electron carries a-negadive charge.
B) Rewrite the following statements by selecting the correct option.
1. Matter that contains two or more constituent substances is called
a) mixture b) compound c) element d) metelloid
2. Instrument which is used to record earthquake is
a) seismometer b) Thermometer c) hydrometer d) lactometer
3. The symbol 'A' is used to denote the
a) atomic number b)atomic radius c) atomic mass number d) atomic mass
4. Isotopes of an element have the same number of
a) neutron b) nucleons C)electrons d)atoms.
C) Following are some statements about pollution. Which type of pollution do those express?
1. Many times, vomiting and dysentery occurs after eating 'pani-puri'.
2. problem of sneezing occurs sometimes during visit to garden.
Q.3. Answer the following questions
1. What can be prevented by avoiding smoking and alcoholism.
2. Why the wall of a dam is broad at its base.
3. Describe working and usefulness of a drycell.
4. Why all the mass of an atom is concentrated in the nucleus.
5. Write the names and symbols of the constituent elements and identify their valencies from the molecular
formulae given below.
ii) H2S
6. Classify the following elements into metals and non-metals.
Gold, silver, copper, carbon, phosphorous, aluminum, oxygen, hydrogen
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Answer 1

Answer:

6) Gold = Metal, Silver =Metal, Copper = Metal, Carbon = non-metal, Aluminum =Metal, Oxygen = non-metal, hydrogen = non-metal

Explanation:

I hope it's help you.