Option “A” is correct Metformin is an oral anti-diabetic drug for the treatment of diabetes.
324. Which fibre is also called as artificial silk?
1. Nylon
2. Rayon
3. Polyester
4. Acrylic
Option “B” is correct Artificial silk is any synthetic fiber which resembles silk, but typically costs less to produce. Rayon fibre is also called as artificial silk.
325. The tip of the match-stick contains –
1. Phosphorus pentoxide
2. White phosphorus
3. Red phosphorus
4. Phosphorus trichloride
Option “C” is correct The tip of the match-stick contains Red Phosphorus.
326. The energy, found in dry cell is-
1. Mechanic
2. Electric
3. Chemical
4. Electromagnetic
Option “C” is correct The best example of changing into electric energy from chemical energy is primary cells or batteries, the dry cell is also made up in this phenomenon.
327. Which chemical substance is used for making rat poison?
Option “A” is correct Carbon dioxide gas is used in a fire extinguisher to control small fires, often in emergency situations.
329. Which of the following is not a part of an atom?
1. Electron
2. Proton
3. Neutron
4. Photon
Option “D” is correct Proton, electron and neutron are part of an atom. These particles are also known as three fundamental particles, but the photon is associated with light energy and also known as energy packet of light.
330. What is the most commonly used substance in fluorescent tubes?
1. Sodium oxide and Argon
2. Sodium vapour and Neon
3. Mercury vapour and Argon
4. Mercury oxide and Neon
Option “C” is correct A fluorescent lamp or fluorescent tube is a gas discharge lamp that uses electricity to excite mercury vapour. It contains Mercury Vapour and Argon.
