Date : 15

1 ThDate : 15 December 2020 Regd. Office : Aakash Tower, 8, Pusa Road, New Delhi-110005 Ph.: (011) 47623456 ONLINE MODEENGINEERINGD ANTHE-2020 (Engineering) (Class X Studying Moving to Class XI) Code-D Space for Rough Work 1 Aakash National Talent Hunt Exam 2020 (Class X Studying Moving to Class XI) Time : 1 Hour MM : 90 SECTION-I : SINGLE ANSWER TYPE This section contains 5 multiple choice questions. Each question has 4 choices (1), (2), (3) and (4) out of which ONLY ONE is correct. 1. In figure shown, a light ray is incident on face AB of prism ABC and reaches to face AC at an angle of 30 with the normal.

2 The angle of incidence is (Refractive index of prism = 2) (1) 30 (2) 45 (3) 60 (4) 90 2. The sun is visible to us about 2 minutes before the actual sunrise, this phenomena is due to (1) Dispersion (2) Scattering of light (3) Reflection (4) Atmospheric refraction PHYSICS (Class X Studying Moving to Class XI) Code-D ANTHE-2020 (Engineering) Space for Rough Work 2 3. Circumference of circular cross section of wire A is equal to the perimeter of square shape cross section of wire B. If the material and lengths of both wires are same, then ratio of resistance of A to B is (1) : 4 (2) 2 : (3) 4 : (4) 1 : 4.

3 Two identical convex lenses A and B are of focal lengths 10 cm each is separated by 30 cm in front of plane mirrors as shown in figure. Where should a point object be placed in front of the lens A so that its image is produced on itself? (1) 20 cm (2) 15 cm (3) 30 cm (4) 10 cm 5. In the circuit given below, the voltmeter reads 30 V, then the resistance of the resistor R is (1) 300 (2) 400 (3) 600 (4) 1200 Space for Rough Work 3 ANTHE-2020 (Engineering) (Class X Studying Moving to Class XI) Code-D SECTION-II : MORE THAN ONE ANSWER TYPE This section contains 2 multiple choice questions.

4 Each question has 4 choices (1), (2), (3) and (4) out of which MORE THAN ONE answer may be correct. 6. Arrangements of three bulbs A, B and C of same rating 60 W, 220 V as shown in figure. Choose the correct option(s). (1) Power consuming by bulb A is 80watt3 (2) Power consuming by bulb B is 40watt3 (3) Power consuming by bulb C is 20watt3 (4) Total power consuming by circuit is 40 watt 7. In the circuit shown in figure, when switches S1 and S2 are opened then equivalent resistance of circuit is R1. R2 is equivalent resistance of circuit when both switches are closed.

5 Choose the correct option(s). (1) 1597R= (2) 22R= (3) 14138R= (4) 25R= (Class X Studying Moving to Class XI) Code-D ANTHE-2020 (Engineering) Space for Rough Work 4 SECTION-III : ASSERTION & REASON TYPE This section contains 1 Assertion-Reason type question, which has 4 choices (1), (2), (3) and (4) out of which ONLY ONE is correct. 8. A : White light splits into seven colours when it passes through prism. R : Light of different colours travel with same speed in vacuum. (1) Both (A) and (R) are true and (R) is the correct explanation of (A) (2) Both (A) and (R) are true but (R) is not the correct explanation of (A) (3) (A) is true but (R) is false (4) (A) is false but (R) is true SECTION-IV : MATRIX MATCH TYPE This section contains 1 Matrix Match type question, which has 2 Columns (Column-I and Column-II).

6 Column-I has four entries (A), (B), (C) and (D), Column-II has four entries (P), (Q), (R) and (S). Match the entries in Column-I with the entries in Column-II. Each entry in Column-I may match with one or more entries in Column-II. For each entry in Column-I, tick the boxes of all the matching entries in Column-II. For example, if entry (A) in Column-I matches with entries (P) & (S) in Column-II, then tick the boxes (P) & (S). Similarly, tick the boxes for entries (B), (C) and (D). 9. Column I contained the positions of real object in front of an optical element and Column II contained properties of image formed by optical elements.

7 Column I Column II (A) Object placed between focus and pole of concave mirror (P) Image is inverted (B) Object placed between focus and centre of curvature of concave mirror (Q) Image is erect (C) Object placed at distance f in front of convex mirror (R) Image is of greater size than the object (D) Object placed beyond centre of curvature of concave mirror (S) Image is of smaller size than the object Space for Rough Work 5 ANTHE-2020 (Engineering) (Class X Studying Moving to Class XI) Code-D SECTION-I : SINGLE ANSWER TYPE This section contains 5 multiple choice questions.

8 Each question has 4 choices (1), (2), (3) and (4) out of which ONLY ONE is correct. 10. Minal took 10 mL of aqueous solution of some unknown substance X. To this solution, she added few drops of methyl orange and observes that X turns yellow. X can be (1) Lemon juice (2) 1 M HCl (3) Vinegar (4) Magnesium hydroxide 11. Iron (III) oxide on heating with carbon monoxide gas reacts to form solid iron and liberates carbon dioxide gas. The specie which is being oxidised in this reaction is (1) Iron (III) oxide (2) Carbon monoxide (3) Iron (4) Carbon dioxide 12.

9 Identify the metal which reacts with steam to form metal oxide and hydrogen. (1) Ca (2) Ag (3) Cu (4) Fe 13. When chlorine gas is passed through an aqueous solution of potassium iodide, solid iodine is formed along with the formation of aqueous solution of potassium chloride. The sum of the stoichiometric coefficients of reactants (on balancing the reaction) and the type of reaction respectively are (1) 1 and combination reaction (2) 2 and precipitation reaction (3) 2 and double displacement reaction (4) 3 and displacement reaction 14.

10 Which of the following has the minimum pH? (1) Milk (2) Zinc carbonate (3) Curd (4) Washing soda CHEMISTRY (Class X Studying Moving to Class XI) Code-D ANTHE-2020 (Engineering) Space for Rough Work 6 SECTION-II : MORE THAN ONE ANSWER TYPE This section contains 2 multiple choice questions. Each question has 4 choices (1), (2), (3) and (4) out of which MORE THAN ONE answer may be correct. 15. Consider the following Set IAluminium chloride, ammonium chlorideSet II Sodium sulphate, sodium carbonate The cation of some unknown compound belongs to the family of salts of Set-II and the anion of same compound belongs to family of salts of Set-I.