Which of the following is used as an antitranspirant?
Options
(a) Cobalt chloride (b) Napthol acetic acid (c) Calcium carbonate (d) Phenyl mercuric acetate
Correct Answer:
Phenyl mercuric acetate
Explanation:
The substances which […]
In the conversion of Br₂ to BrO₃⁻, the oxidation number of Br changes from
Options
(a) zero to 5 (b) 1 to 5 (c) zero to -3 (d) 2 to 5
Correct Answer: […]
The unit of natural selection is
Options
(a) an individual (b) a species (c) a genus (d) a population
Correct Answer:
an individual
Explanation:
No explanation available. Be the first to write the […]
Which of the following regions of our country are known for their rich biodiversity?
Options
(a) Western Ghats and Eastern Himalayas (b) Western Ghats and Deccan plateau (c) Eastern Himalayas and Gangetic plane […]
World biodiversity day is celebrated annually?
Options
(a) 5th June (b) 29th December (c) 22nd April (d) 16th September
Correct Answer:
29th December
Explanation:
No explanation available. Be the first to write the […]
The loudness and pitch of a sound note depends on
Options
(a) Intensity and frequency (b) Frequency and number of harmonics (c) Intensity and velocity (d) Frequency and velocity
Correct Answer:
Intensity and frequency
A tuning fork A produces 4 beats per second with another tuning fork B of frequency 320 Hz. On filing one of the prongs of A, 4 beats per second are again heard when sounded […]
A beam of light of wavelength 600 nm from a distant source falls on a single slit 1 mm wide and the resulting diffraction pattern is observed on a screen 2 m away. The distance […]
The width of the diffraction band varies
Options
(a) Inversely as the wavelength (b) Directly as the width of the slit (c) Directly as the distance between the slit and the screen (d) […]
The specific charge of a proton is 9.6×10⁷ C/kg. The specific charge of an alpha particle will be
Options
(a) 9.6 x 10⁷ C kg⁻¹ (b) 19.2 x 10⁷ C kg⁻¹ (c) 4.8 x […]
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