GK Questions for Unit Test 2, Class IX PDF

**GK questions for Unit test 2** **Class IX** **Chapter-11** **Reflection of light.** **Q1\] Which metal reflects the most?** **Ans-** Silver. **Q2\] Give some examples of bio-luminescence organisms.** **Ans-**Some species of jellyfish, squid, lanternfish, fungi like-bitter oyster. **Q3\] Wh...

**GK questions for Unit test 2** **Class IX** **Chapter-11** **Reflection of light.** **Q1\] Which metal reflects the most?** **Ans-** Silver. **Q2\] Give some examples of bio-luminescence organisms.** **Ans-**Some species of jellyfish, squid, lanternfish, fungi like-bitter oyster. **Q3\] Which colour is the best reflector?** **Ans-**White**.** **Q4\] Give some examples of instruments, which uses reflection property of light.** **An**s- Microscope, telescope, periscope, kaleidoscope. **Q5\] Which colour is the best absorber of light?** **Ans-**Black**.** [\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_] **Chp 13 Carbon: An important element** **1. \*\*What is the percentage of carbon present in the Earth\'s crust?\*\*** \*Answer:\* 0.02% to 0.025%. **2. \*\*How much does a 1-carat diamond weigh?\*\*** \*Answer:\* 0.280 grams. **3. \*\*Which is the most abundant organic compound in the world?\*\*** **\***Answer:\* Cellulose. **4. \*\*What are the types of fire extinguishers and their classifications?\*\*** **\*Answer:\*** **-** Red: Water (Class A) \- Blue: Dry Powder (Class A, B, C, D, Electrical) \- Cream: Foam (Class A, B) \- Black: CO2 (Class B, Electrical) \- Yellow: Wet Chemical (Class A, F). **5. \*\*What type of hydrocarbons are present in vegetable oil?\*\*** **\*Answer:\*** Unsaturated hydrocarbons**.** **Chapter-16** **01 Who coined the term mutation?** Ans Hugo de Vries **02 Name the chromosomal abnormality. în which trisomy of 18th chromosome occurs.** Ans Edwards\' syndrome **03 What is the codon for Glutamic acid)** Ans GAA GAG. **04 Who is known as the father of genetic??** Ans Gregor Mendel. **05 Which chromosome is bigger among X and Y ?** Ans X-Chromosomes **Chapter -15 Life processes in living organisms.** **1\] A doctor specialized in kidney diseases is called as [Nephrologist].** **2\] What is the percentage of urea in urine of normal person?** Ans- 2% to 2.5% **3\] Name the hormone secreted by pineal gland?** Ans- Melatonin. **4\] What is the length of spinal cord?** Ans- The length of spinal cord is about 42 to 45 cm. **5\] Give examples of insectivorous plants.** Ans- Pitcher plants, Cobra lily, Butterwort, Byblis, Genlisea etc.