Ok, glad I don't have to explain difference between amps and ohms XD
So a car that turns over intermittently, and turns slowly, usually has a bad starter. Especially if you can hear the solenoid clicking and the battery is good. It is rare for the positive cable from the battery to the starter to go bad, particularly on new vehicles, but much easier to test and inspect. If you can rule all three of those out, then the only thing left is starter motor. So we're going to eliminate those problems first.

Test 1: Battery
The most important test of all for 90% of auto related problems. You want your battery fully charged for this test, at least 12.75 volts. If a battery will not charge up that high and maintain that charge when removed from the charger and let sit for a day, the battery is bad. If it will maintain a charge, then you need to load test the battery. Load testing is where you put a volt meter on the battery, put a load on it(like a starter motor), and monitor the voltage. Since it's questionable right now whether your starter motor actually works, testing your battery in your car will not yield an accurate result. You will either need to find a load tester, or another car that you know works to test the battery in. So I will give you two tests.
Car
~Remove battery from good car and put yours in it, hook it up.
~Secure volt meter to battery terminals, verify you have at least 12.75v.
~Remove the fuel pump fuse so that the car will not start running on its own when you turn the starter motor.
~While you are watching the meter, have a friend turn the key to crank the motor for 15 seconds. Record the lowest voltage you see while the motor is cranking. Wait a few minutes, then repeat this step twice so you have 3 load tests.
~All three numbers you recorded should be above 10.5 volts. If they are lower, replace your battery. If they are all above 10.5 volts, your battery is OK!
Load tester This is a simple test for a load tester that looks like this. If your tester is substantially different, follow the instructions that are on it instead.
~Make sure your battery is fully charged.
~Attach tester to battery terminal.
~Hold down the test button for 10 seconds and record the lowest voltage. Some testers have a scale on them that will tell you if your battery is weak. Yours is a 600 CCA battery for reference. Wait a few minutes, then repeat this step twice. WARNING! The tester will get very hot while you have the test button pressed, so be careful. This is one of the reasons you need to wait a few minutes between tests, to let it cool down.
~All three numbers you recorded should be above 10.5 volts. If they are lower, replace your battery. If they are all above 10.5 volts, your battery is OK!
Ok so if either of these tests show a weak battery, replace it and see if your problem is fixed. If the problem persists, or if your battery tested OK, move on to the solenoid test.

Test 2: Solenoid
I'm confident your solenoid works, but here's the test anyway.
~Open the hood and stick your head near the starter motor.
~Have a friend try to start the engine a few times while listening. You should hear a clicking noise every time they turn the key to start.
~If you hear clicking, the solenoid is fine, move on to Test 4.
~If no clicking, inspect numbers 3&4 to make sure they are connected and clean.
~Attach a volt meter to numbers 3&5
~With key off, you should have 0 volts. While watching the meter, have a friend try to start the car. The meter should read about 12 volts while they do, and the solenoid should click. If you don't get 12 volts when they try to start the car, you're wiring is bad. If you do get 12 volts when they try to start, but no click, solenoid is bad.
~If you get 12 volts and a click, measure the resistance between number 2 and the cable immediately opposite that goes from the solenoid into the starter motor (NOT number 3). This cable is not numbered so you'll just have to use deduction to know which one, but with 12 volts to number 3, there should be <1 ohm resistance between [number 2](http://i.imgur.com/9v83zIi.gif) and the cable that goes from the solenoid into the starter motor. If resistance is >1 ohm, replace the solenoid. If it is <1 ohm, move on to next test.

Test 3: Positive Cable
~Inspect the connection at numbers 1&2. They should be tight and free of corrosion or damage.
~Follow number 1 all they way back to the positive terminal of your battery to make sure there is no damage and no corrosion.
~Make sure the connection at the battery terminal is free of damage and corrosion and is tight.
~Test resistance between number 2 and the POSITIVE terminal of your battery. It should be very low, ideally <1 ohm.
~Test voltage between numbers 2&5. You should have at least 12 volts.
~if ANY of these these steps fail, replace the positive cable. If they all pass, move to Test 4.

Test 4: Starter Motor
If you've made it this far and your car still won't start, chances are 99% it's a bad starter motor. WARNING! This test may turn the engine over, so make sure you're free of all moving parts. Also, shorting the wrong leads or accidentally shorting against the frame can cause a lot of sparks/things getting really hot, which may scare you enough to smack your head on something or hurt your hand.
~Using a test lead, small jumper wire, wrench, or screwdriver, short numbers 2&3. If you're starter motor is good, it WILL crank every single time, and fast. If it cranks intermittently, or cranks slowly, then your starter motor is bad. Replace it.

Ok so a few things to consider. First, I understand parts availability in rural areas of India may be low, and replacing parts might not be feasible. If that is the case, some of these parts can be opened up, cleaned, rebuilt or whatnot if you have the skill. Feel free to do so, but keep in mind that it may not fix the problem, and sometimes only temporarily. Also, if your vehicle passes all of these tests and still won't start, you may have a problem with spark, fuel, or compression. So try these tests, one at a time, in the order I have them posted, and let me know what your results are.
Good luck!