All board exam guide helps you to get all material for 10th and 12th board exam

                                                      QUESTION PAPER - 5                                    Total Mark : 80                                         Section-A Answer the following Q. No. 1 to 18 (with following Q. No. 1 to 18 (within the limit of 10 to 20 words) as directed : (1 mark each) Fill in the blanks so as to make each of the following statement true: 1.The addition of oxygen to a substance is called .. oxidation........ 2.All information from our environment is detected by the specialized. .nerve. .......cells. 3. Genetics ... is the science of heredity and evolution. 4. Size of Na+ is . smaller. than sodium atom. State whether t...

Science Std.-10 QUESTION PAPER - 4 Total Mark : 80 Time : 3 Hours Section-A Answer the following Q. No. 1 to 18 (within the limit of 10 to 20 words) as directed: (1 mark each) Fill in the blanks so as to make each of the following statements true : 1. Electric potential at a point in an electric field is measured as the .. work .. done in bringing, a unit positive test charge from infinity to that point, 2... .cerebrospinal ..... fluid is found in ventricles of brain. 3.. cerebellum .... is a part of hind brain which maintain the posture and balance of body. 4. Atomic size . decrease.... from left to right in a period. State whether the following statement are true or false. 5. Oxidation is the loss of electrons from a substance. True 6. The reaction of ethanol with conc. H2SO4 gives ethane. False 7. Carboxylic acids react with alcohols to form esters. True Choose the correct option and write it with answer from those given below multiple choice que...

                    Section-A Answer according to instruction : (Question no. 1 to 16) (1 mark each) State whether the following statements are True or False. 1. The product of its zeroes : 3x2 +6x +2 is (-3). Ans :-False 2. P(x) = 25x2 – 10x + 1, Discriminant is zero. Ans :- True 3. 1/2,1/3,1/4,1/5..... is a arithmetic progression. Ans :-False 4. sin (60°). cos (60°) =3/4 Ans :-False Fill in the blanks by selecting the proper alternative from those given below each statement. 5. If two dice are throw once, then_____ event possible. (a) 6 (b) 12 (c) 24 (d) 36 6. If a dice is throw once, then______ the probability of number more than 5 appearing on the dice. (a) 1/5   (b) 1/6    (c) 1/2    (d) 1/4 7. If  Σfi = 100, Σfi di = 1234 then Mean (x) = (a) 12.34 (b) 1.234 (c) 123.4 (d) 0.1234 8. If 28x + 22 y = 50 and 22x+28 y = 150 then x + y = ____ (a) 2       ...