Question
Which of the following elements is not present in Duralumin? (a) Al (b) Zn (c) Cu (d) Mg
Which of the following elements is not present in Duralumin? (a) Al (b) Zn (c) Cu (d) Mg
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Subject: Physical Science
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Question
The substance used for drying ammonia gas is: (a) CaCl₂ (b) CaO (c) H₂SO₄ (d) P₂O₅
The substance used for drying ammonia gas is: (a) CaCl₂ (b) CaO (c) H₂SO₄ (d) P₂O₅
Question
If the atomic number of an element is 19, in which group of the modern periodic table is the element placed?
If the atomic number of an element is 19, in which group of the modern periodic table is the element placed? (a)…
Question
If the mass of an electron is m, then the mass of a β-particle is: (a) m (b) 2 m (c) 3 m (d) 4m
If the mass of an electron is m, then the mass of a β-particle is: (a) m (b) 2m (c) 3m (d)…
Question
With increase in temperature, the resistance decreases in: (a) Copper (b) Nichrome (c) Glass (d) Silicon
With increase in temperature, the resistance decreases in: (a) Copper (b) Nichrome (c) Glass (d) Silicon
Question
The total charge of how many electrons is equal to 1 coulomb? [1] (a) 1.6 × 10¹⁹ (b) 6.25 × 10¹⁰ (c) 6.25 × 10¹⁸ (d) 6.023 × 10²³
The total charge of how many electrons is equal to 1 coulomb? (a) 1.6 × 10¹⁹ (b) 6.25 × 10¹⁰ (c) 6.25…
Question
When a ray of light is incident normally on the surface of a glass slab, the angle of refraction will be
When a ray of light is incident normally on the surface of a glass slab, the angle of refraction will be: (a)…
Question
The least distance of distinct vision for a normal human eye is: (a) 25 cm (b) 100 cm (c) Infinity (d) 0 cm
The least distance of distinct vision for a normal human eye is: (a) 25 cm (b) 100 cm (c) Infinity (d) 0…
Question
The SI unit of thermal conductivity is: (a) W m⁻¹ K⁻¹ (b) cal m⁻¹ °C⁻¹ (c) W m K⁻¹ (d) W m² K⁻¹
The SI unit of thermal conductivity is: (a) W m⁻¹ K⁻¹ (b) cal m⁻¹ °C⁻¹ (c) W m K⁻¹ (d) W m²…
Question
According to the following chemical equation, what volume of oxygen at S.T.P. is required for the complete combustion of 5 moles of methane?
According to the following chemical equation, what volume of oxygen at S.T.P. is required for the complete combustion of 5 moles of…