SCOREALLEXAMS

NECO PHYSICS ANSWERS ======================== PHYSICS OBJ 1-10: BCEDBECBAD 11-20: DEDCBEDCEA 21-30: DDAEBBCBBC 31-40: CEDBBCBEAE 41-50: BDEEDECCCD 51-60: BEECECDBCB =================== (1a) (i) A multimeter (ii) Reads if there is short circuit in the electric circuit (1b) (i) A simple microscope uses one lens while a compound microscope uses two lens (ii) A compound microscope produces a higher magnification than that of simple microscope (1c) Using M= ZIt I = M/Zt I = 450/3.30*10- *25*60 I = 909A ============================== (3a) Range (R) is defined as the horizontal distance from the point of projection to the point where the projectile hits the projection plane again (3b) Time of flight: T= 2usin/g sin = Tg/2u = 1.5*10/2*12 sin = 15/24 = 0.625  = sin-(0.625)  = 38.7 ============================== (4a) (i) Flying bullet (ii) A moving car (4b) mgh = mc  = gh/c = 10*108/4200 = 0.257C or 0.257K ============================== (5a) Vaporization is the conversion of a substance from the

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2021 NABTEB BIOLOGY PRACTICAL ANSWERS ====================================== (NUMBER 1) (i) (i) They are proteins in nature (ii) They act best at specific pH (either acidic or alkaline) (ii) (i) Auxins (ii) Gibberellins (iii) (i) Fever (ii) Dry cough (iii)Tiredness (iv) Headache (iv) (i) Have Three pairs of thoracic legs (ii)Three body divisions namely, head, thorax and abdomen (v) Dog... i 3/3 c1/1 pm4/4 m2/3 = 42 teeth (vi) (i) Tannins (ii) Gum and mucilageand mucilage (vii) Corolla (viii) (i) Shoulder and chest broadens (ii) Production of sperms (ix) Located in the upper thoracic region on the dorsal surface of the rib cage (x) (a) Turbidity/transparency of water bodies (b) Atmospheric pressure (xi) (i) They anchor plants firmly in the soil. (ii) Root conducts water and mineral salts upward to the stem and into the leaves. (xii) (i) Charles Darwin (ii) JeanBaptiste Lamarck (xiii) A dominant gene is one of the alternative forms of a gene which masks the effect of the other (recessive

2021 NABTEB CHEMISTRY PRACTICAL ANSWERS ============================== ============= VERY IMPORTANT INFORMATION FOR NUMBER(1) PLEASE REMEMBER TO USE YOUR SCHOOL'S AVERAGE TITRE VALUE(AVERAGE VOLUME OF ACID). WE USED 23.60cm3, TRY TO KNOW YOUR SCHOOL'S AVERAGE TITRE VALUE. ASK YOUR CHEMISTRY TEACHER. THEN, ANYWHERE YOU SEE 23.60cm3 IN OUR CALCULATION, PUT YOUR SCHOOL'S OWN AND RE-CALCULATE. THIS IS VERY IMPORTANT!!!

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